Pre-Final Exam

Function of Chipset

The Pentium 4 refers to Intel's mainstream desktop and mobile single-core CPUs (introduced on November 20, 2000) with the seventh-generation NetBurst architecture, which was the company's first all-new design since the Intel P6 of the Pentium Pro branded CPUs of 1995. Pentium 4 branded CPUs introduced the SSE2 and SSE3 instruction sets to accelerate calculations, transactions, media processing, 3D graphics, and games. They also integrated Hyper-Threading (HT), a feature to make one physical CPU working as two logical and virtual CPUs, and more. The Intel's Pentium 4 branded flagship also came in a low-end version branded Celeron (often referred to as Celeron 4), and a high-end derivative branded Xeon intended for servers and workstations. In 2005, the Pentium 4 was superseded by the Pentium D and Pentium Extrem Edition brands of dual-core CPUs.

The Core 2 Dou refers to a range of Intel's consumer dual-core and quad-core (2x2) 64-bit x86 CPUs based on the Intel Core microarchitecture, which derived from the 32-bit dual-core Yonah laptop professor. The Core 2 relegated the Pentium brand to a lower-end market, and reunified the laptop and desktop CPU lines separated by the Pentium M and Pentium 4 brands.

Different Kinds of Chipsets

915P Express Chipset
The i915P Express is positioned by Intel as a mass-market discrete chipset with support of PCI Express and DDR2 SDRAM. Thus, it costs much less than the top-end i925X Express – we saw a similar difference between the last-generation chipsets (the top-end i875P and the mainstream i865PE

925X Express Chipset
925X Express chipset-based platforms are optimized to deliver exceptional system performance, providing advanced technology and new levels of efficiency to help meet the demands of advanced computer users.The Intel 925X Express chipset was designed to support the Intel® Pentium® 4 processor Extreme Edition supporting Hyper-Threading Technology† and the Intel® Pentium® 4 processor supporting Hyper-Threading Technology†. Additionally, the Intel 925X Express chipset is specifically designed to support Intel® Extended Memory 64 TechnologyΦ (Intel® EM64T) enabling 64-bit memory addressability.


875P Chipset The Intel 875P chipset, optimized for the Intel® Pentium® 4 processor supporting Hyper-Threading (HT) Technology†, adds intelligence to help manage and prioritize multiple threads received from the microprocessor. The 875P chipset features support for an 800 MHz Front Side Bus (FSB) and implements Intel® Performance Acceleration Technology (Intel® PAT) with dual-channel DDR 400 memory configurations to get incredible performance from the memory interface.

865PE Chipset 865PE chipset, designed for the Intel® Pentium® 4 processor supporting Hyper-Threading Technology†, is a flexible and highly scalable solution that meets a broad range of demanding computing needs. The 865PE chipset features high-bandwidth interfaces such as dual-channel DDR 400 main memory, AGP 8X graphics interface, and Intel® Communication Streaming Architecture featuring a Dedicated Network Bus (DNB) interface for wire-speed Gigabit Ethernet (GbE).

System Requirements:




Latest Video Card

Diamond Multimedia Radeon 9550 Video Card
Take your graphics performance to the next level with the S120 Graphics Accelerator Card from Diamond Multimedia. Explore stunning worlds of cinematic gameplay with the S120 graphics accelerator card, featuring ATI Radeon 9550 graphics technology! The S120 delivers an unprecedented combination of power, performance, and Microsoft® DirectX® 9 optimized support for the serious gamer. The S120’s Quad-pipe architecture and high precision shaders will maximize your long-term entertainment value, pushing the most compelling next-generation games to their limit!

System Requirements:

Full AGP 8X support.
DirectPlay of the Microsoft® DirectX® 9 brings improved multiplayer access to groups connecting over LANs and the Internet.
Supported by CATALYST™, the industry's most stable 3D acceleration software.
Also supporting the latest OpenGL® functionality and feature sets Extra Life
Optimized to run the most demanding 2D and 3D next-generation games and applications without putting extra strain on the CPU
VIDEO IMMERSION™ integrates features to provide unprecedented support for digital and high definition video.
FULLSTREAM™ removes blocky artifacts from streaming Internet video to deliver smoother looking, higher quality online content
Quad-Pipe architecture delivers real-time cinematic rendering and animation
SMARTSHADER™ 2.0 technology supports Microsoft® DirectX® 9
SMOOTHVISION™ 2.1 technology delivers the sharpest textures without sacrificing frame rates

Exercise 2

Memory chip a chip that holds programs and data either temporarily (RAM), permanently (ROM, PROM) or permanently until changed (EPROM, EEPROM, flash memory). See memory types and memory module.

RAM chips (Random Access Memory) A group of memory chips, typically of the dynamic RAM (DRAM) type, which function as the computer's primary workspace. When personal computers first came on the market in the late 1970s, 64KB (64 kilobytes) of RAM was the upper limit. Today, 64MB (64 megabytes) of SDRAM is entry level for a desktop computer, a thousand times as much (see SDRAM).Random Access Means Direct AccessThe "random" in RAM means that the contents of each byte of storage in the chip can be directly accessed without regard to the bytes before or after it. This is also true of other types of memory chips, including ROMs and PROMs. However, unlike ROMs and PROMs, RAM chips require power to maintain their content, which is why you must save your data onto disk before you turn the computer off. To learn about the types of RAM chips and how to upgrade your memory, see memory module. To learn how memory is used to process data, see computer or memory. See also dynamic RAM and static RAM.

ROM chips(Read Only Memory) A memory chip that permanently stores instructions and data. Also known as "mask ROM," its content is created in the last masking stage of the chip manufacturing process, and it cannot be changed. Stand-alone ROM chips and ROM banks in microcontroller chips are used to hold control routines for a myriad of applications. ROMs were also widely used to hold the BIOS in early PCs as well as plug-in cartridges for video games.Although EPROMs, EEPROMs, and particularly flash memory, are the kinds of non-volatile storage one hears about more often, ROM technology is mature, inexpensive and easy to integrate into any CMOS chip. See memory types, RAM, EEPROM and flash memory.

PROM (Programmable ROM) A permanent memory chip in which the content is created (programmed) by the customer rather than by the chip manufacturer. It differs from a ROM chip, which is created at the time of manufacture. PROMs are used for storage when their content is not expected to change, but in many applications, they have given way to EPROMs and EEPROMs, which can be reprogrammed.

EPROM (Erasable Programmable ROM) A rewritable memory chip that holds its content without power. EPROM chips are written on an external programming device before being placed on the circuit board. The chip requires an expensive ceramic package with a small quartz window that is covered with opaque, sticky tape. In order to reprogram an EPROM, the chip is extracted from the circuit board, the tape is removed, and it is placed under an intense ultraviolet (UV) light for approximately 20 minutes.

EEPROM (Electrically Erasable Programmable ROM) A rewritable memory chip that holds its content without power. EEPROMs have a lifespan of between 10K and 100K write cycles, which is considerably greater than the E-PROMs that preceded them (in this definition only, a dash is inserted in EPROM for easier recognition between EPROM and EEPROM).

Ports an interface on a computer to which you can connect a device. Personal computers have various types of ports. Internally, there are several ports for connecting disk drives, display screens, and keyboards. Externally, personal computers have ports for connecting modems, printers, mice, and other peripheral devices.
Almost all personal computers come with a serial RS-232C port or RS-422 port for connecting a modem or mouse and a parallel port for connecting a printer. On PCs, the parallel port is a Centronics interface that uses a 25-pin connector. SCSI (Small Computer System Interface) ports support higher transmission speeds than do conventional ports and enable you to attach up to seven devices to the same port.

In TCP/IP and UDP networks, an endpoint to a logical connection. The port number identifies what type of port it is. For example, port 80 is used for HTTP traffic. Also see Well-Known TCP Port Numbers in the Quick Reference section of Webopedia.
(v.) To move a program from one type of computer to another. To port an application, you need to rewrite sections that are machine dependent, and then recompile the program on the new computer. Programs that can be ported easily are said to be portable.

Kinds of Ports

The FreeBSD Ports and Packages Collection offers a simple way for users and administrators to install applications. There are currently 17547 ports available.
The Ports Collection supports the latest release on the FreeBSD-CURRENT and FreeBSD-STABLE branches. Older releases are not supported and may or may not work correctly with an up-to-date ports collection. Over time, changes to the ports collection may rely on features that are not present in older releases. Wherever convenient, we try not to gratuitously break support for recent releases, but it is sometimes unavoidable. When this occurs, patches contributed by the user community to maintain support for older releases will usually be committed.

OpenBSD is a fairly complete system of its own, but still there is a lot of software that one might want to see added. However, there is the problem of where to draw the line as to what to include, as well as the occasional licensing and export restriction problems. As OpenBSD is supposed to be a small stand-alone UNIX-like operating system, some things just can't be shipped with the system.

TCP ports are used by the Transmission Control Protocol, which allows a server to conduct a conversation, or session, with another machine. When your computer wants to request a page from a Web server, it sends a packet to that machine indicating that it wants to talk to TCP port 80 (the well-known port through which most Web servers deliver pages). The server, seeing that you've asked for port 80, connects your computer to the Web server program, which—of the many programs running on the machine—is the one that specializes in delivering Web pages. The conversation between the machines may be brief or may continue indefinitely.
UDP ports are used by the User Datagram Protocol, which lets machines send short messages to one another. Unlike TCP, UDP does not establish an ongoing conversation; each message stands alone.

Buses are common pathway between resources and devices. In a computer, there are two major types: the system bus and peripheral bus. The system bus, also known as the "frontside bus" or "local bus," is the internal path from the CPU to memory and is split into address bus and data bus subsets. Addresses are sent over the address lines to signal a memory location, and data are transferred over the data lines to that location.System buses transfer data in parallel. In a 32-bit bus, data are sent over 32 wires simultaneously. A 64-bit bus uses 64 wires.

Three main Buses Architecture

PCI (Peripheral Component Interconnect) The most widely used I/O bus (peripheral bus). Used in computers of all sizes, it provides a shared data path between the CPU and peripheral controllers, such as network, display, SCSI and RAID cards. However, with so many controller circuits built into the motherboard, the need for vacant PCI slots in a PC has diminished considerably.

AGP (Accelerated Graphics Port) A high-speed 32-bit port from Intel for attaching a display adapter to a PC. It provides a direct connection between the card and memory, and only one AGP slot is on the motherboard. AGP was introduced as a higher-speed alternative to PCI display adapters, and it freed a PCI slot for another peripheral device. The brown AGP slot is slightly shorter than the white PCI slot and is located about an inch farther back. AGP is superseded by PCI Express.

PCI Express a high-speed peripheral interconnect from Intel introduced in 2002. Note that although sometimes abbreviated "PCX," PCI Express is not the same as "PCI-X" (see PCI-SIG and PCI-X for comparison). As a result of the confusion, "PCI-E" or "PCIE" is the accepted abbreviation.Initially used for high-speed display adapters, and intending to eventually replace the PCI and AGP buses entirely, PCI Express was designed to match the higher speeds of today's CPUs. It can accommodate Gigabit and 10 Gigabit Ethernet and even support chip-to-chip transfers.

Discriptions and Functions of NETWORK TOPOLOGY

Network topology is the study of the arrangement or mapping of the elements (links, nodes, etc.) of a network, especially the physical (real) and logical (virtual) interconnections between nodes.

A local area network (LAN) is one example of a network that exhibits both a physical and a logical topology. Any given node in the LAN will have one or more links to one or more other nodes in the network and the mapping of these links and nodes onto a graph results in a geometrical shape that determines the physical topology of the network. Likewise, the mapping of the flow of data between the nodes in the network determines the logical topology of the network. It is important to note that the physical and logical topologies might be identical in any particular network but they also may be different.

Any particular network topology is determined only by the graphical mapping of the configuration of physical and/or logical connections between nodes - Network Topology is, therefore, technically a part of graph theory. Distances between nodes, physical interconnections, transmission rates, and/or signal types may differ in two networks and yet their topologies may be identical.

Basic Types of Topologies
The arrangement or mapping of the elements of a network gives rise to certain basic topologies which may then be combined to form more complex topologies (hybrid topologies). The most common of these basic types of topologies are (refer to the illustration at the top right of this page):
Bus (Linear, Linear Bus)
Star
Ring
Mesh
partially connected mesh (or simply 'mesh')
fully connected mesh (or simply fully connected)
Tree
Hybrid

Classification of Physical Topologies:

Point-to-point:
The simplest topology is a permanent link between two endpoints. Switched point-to-point topologies are the basic model of conventional telephony. The value of a permanent point-to-point network is the value of guaranteed, or nearly so, communications between the two endpoints. The value of an on-demand point-to-point connection is proportional to the number of potential pairs of subscribers, and has been expressed as Metcalfe's Law.
Permanent (dedicated):
Easiest to understand, of the variations of point-to-point topology, is a point-to-point communications channel that appears, to the user, to be permanently associated with the two endpoints. Childrens' "tin-can telephone" is one example, with a microphone to a single public address speaker is another. These are examples of physical dedicated channels.
Within many switched telecommunications systems, it is possible to establish a permanent circuit. One example might be a telephone in the lobby of a public building, which is programmed to ring only the number of a telephone dispatcher. "Nailing down" a switched connection saves the cost of running a physical circuit between the two points. The resources in such a connection can be released when no longer needed, as, for example, a television circuit from a parade route back to the studio.
Switched:
Using circuit-switching or packet-switching technologies, a point-to-point circuit can be set up dynamically, and dropped when no longer needed. This is the basic mode of conventional telephony.

Bus:
Linear Bus:
The type of network topology in which all of the nodes of the network are connected to a common transmission medium which has exactly two endpoints (this is the 'bus', which is also commonly referred to as the backbone, or trunk) – all data that is transmitted between nodes in the network is transmitted over this common transmission medium and is able to be received by all nodes in the network virtually simultaneously (disregarding propagation delays.
Note: The two endpoints of the common transmission medium are normally terminated with a device called a terminator that exhibits the characteristic impedance of the transmission medium and which dissipates or absorbs the energy that remains in the signal to prevent the signal from being reflected or propagated back onto the transmission medium in the opposite direction, which would cause interference with and degradation of the signals on the transmission medium (See Electrical termination).
Distributed Bus:
The type of network topology in which all of the nodes of the network are connected to a common transmission medium which has more than two endpoints that are created by adding branches to the main section of the transmission medium – the physical distributed bus topology functions in exactly the same fashion as the physical linear bus topology (i.e., all nodes share a common transmission medium).

Star:
The type of network topology in which each of the nodes of the network is connected to a central node with a point-to-point link in a 'hub' and 'spoke' fashion, the central node being the 'hub' and the nodes that are attached to the central node being the 'spokes' (e.g., a collection of point-to-point links from the peripheral nodes that converge at a central node) – all data that is transmitted between nodes in the network is transmitted to this central node, which is usually some type of device that then retransmits the data to some or all of the other nodes in the network, although the central node may also be a simple common connection point (such as a 'punch-down' block) without any active device to repeat the signals.

Extended Star:
A type of network topology in which a network that is based upon the physical star topology has one or more repeaters between the central node (the 'hub' of the star) and the peripheral or 'spoke' nodes, the repeaters being used to extend the maximum transmission distance of the point-to-point links between the central node and the peripheral nodes beyond that which is supported by the transmitter power of the central node or beyond that which is supported by the standard upon which the physical layer of the physical star network is based.
Note: If the repeaters in a network that is based upon the physical extended star topology are replaced with hubs or switches, then a hybrid network topology is created that is referred to as a physical hierarchical star topology, although some texts make no distinction between the two topologies.

Distributed Star:
A type of network topology that is composed of individual networks that are based upon the physical star topology connected together in a linear fashion – i.e., 'daisy-chained' – with no central or top level connection point (e.g., two or more 'stacked' hubs, along with their associated star connected nodes or 'spokes').

Ring:
The type of network topology in which each of the nodes of the network is connected to two other nodes in the network and with the first and last nodes being connected to each other, forming a ring – all data that is transmitted between nodes in the network travels from one node to the next node in a circular manner and the data generally flows in a single direction only.
Dual-ring:
The type of network topology in which each of the nodes of the network is connected to two other nodes in the network, with two connections to each of these nodes, and with the first and last nodes being connected to each other with two connections, forming a double ring – the data flows in opposite directions around the two rings, although, generally, only one of the rings carries data during normal operation, and the two rings are independent unless there is a failure or break in one of the rings, at which time the two rings are joined (by the stations on either side of the fault) to enable the flow of data to continue using a segment of the second ring to bypass the fault in the primary ring.

Mesh:
The value of fully meshed networks is proportional to the exponent of the number of subscribers, assuming that communicating groups of any two endpoints, up to and including all the endpoints, is approximated by Reed's Law.
Full:
Fully Connected:
The type of network topology in which each of the nodes of the network is connected to each of the other nodes in the network with a point-to-point link – this makes it possible for data to be simultaneously transmitted from any single node to all of the other nodes.
Note: The physical fully connected mesh topology is generally too costly and complex for practical networks, although the topology is used when there are only a small number of nodes to be interconnected.
Partial:
Partially Connected:
The type of network topology in which some of the nodes of the network are connected to more than one other node in the network with a point-to-point link – this makes it possible to take advantage of some of the redundancy that is provided by a physical fully connected mesh topology without the expense and complexity required for a connection between every node in the network.
Note: In most practical networks that are based upon the physical partially connected mesh topology, all of the data that is transmitted between nodes in the network takes the shortest path between nodes, except in the case of a failure or break in one of the links, in which case the data takes an alternate path to the destination – this implies that the nodes of the network possess some type of logical 'routing' algorithm to determine the correct path to use at any particular time.

Tree (also known as Hierarchical):
The type of network topology in which a central 'root' node (the top level of the hierarchy) is connected to one or more other nodes that are one level lower in the hierarchy (i.e., the second level) with a point-to-point link between each of the second level nodes and the top level central 'root' node, while each of the second level nodes that are connected to the top level central 'root' node will also have one or more other nodes that are one level lower in the hierarchy (i.e., the third level) connected to it, also with a point-to-point link, the top level central 'root' node being the only node that has no other node above it in the hierarchy – the hierarchy of the tree is symmetrical, each node in the network having a specific fixed number, f, of nodes connected to it at the next lower level in the hierarchy, the number, f, being referred to as the 'branching factor' of the hierarchical tree.

Hybrid Network Topologies
The hybrid topology is a type of network topology that is composed of one or more interconnections of two or more networks that are based upon different physical topologies or a type of network topology that is composed of one or more interconnections of two or more networks that are based upon the same physical topology, but where the physical topology of the network resulting from such an interconnection does not meet the definition of the original physical topology of the interconnected networks (e.g., the physical topology of a network that would result from an interconnection of two or more networks that are based upon the physical star topology might create a hybrid topology which resembles a mixture of the physical star and physical bus topologies or a mixture of the physical star and the physical tree topologies, depending upon how the individual networks are interconnected, while the physical topology of a network that would result from an interconnection of two or more networks that are based upon the physical distributed bus network retains the topology of a physical distributed bus network).

Example of C++ with Output

// writing on a text file
#include
#include
using namespace std;
int main () {
ofstream myfile ("example.txt");
if (myfile.is_open())
{
myfile << "This is a line.\n"; myfile << "This is another line.\n"; myfile.close(); } else cout << "Unable to open file"; return 0; }



Output:

[file example.txt]
This is a line.
This is another line.

My Autobiography

I am Jossel Hervas Matunding.I was born on 29th day of April year 1990 in MEPI

Clinic Davao del Norte.I am the youngest daugther among the four children of

Mr. and Mrs. Joselito Matunding.I am presently residing #20 km.12 Don Luis

Homes Sasa Davao City.My father is a personal bodyguard but my mother was

already past away.I am now a college student of AMACC,taking up Bachelor of

Science in Information Technology.

I love listening Punk Rock and Emo musics everyday,surfing the Internet,andstudying my lessons.I am an avid fan of Avril Lavigne.I used to imatate her punky looks thats why many people calling me Avril.They say I am friendly,kind,sweet,fun to be with and easy going person.

Parts of Computer System

System unit
The system unit is the core of a computer system. Usually it's a rectangular box placed on or underneath your desk. Inside this box are many electronic components that process information. The most important of these components is the central processing unit (CPU), or microprocessor, which acts as the "brain" of your computer. Another component is random access memory (RAM), which temporarily stores information that the CPU uses while the computer is on. The information stored in RAM is erased when the computer is turned off.

Storage
Your computer has one or more disk drives—devices that store information on a metal or plastic disk. The disk preserves the information even when your computer is turned off.

Hard disk drive
Your computer's hard disk drive stores information on a hard disk, a rigid platter or stack of platters with a magnetic surface. Because hard disks can hold massive amounts of information, they usually serve as your computer's primary means of storage, holding almost all of your programs and files. The hard disk drive is normally located inside the system unit.

CD and DVD drives
Nearly all computers today come equipped with a CD or DVD drive, usually located on the front of the system unit. CD drives use lasers to read (retrieve) data from a CD, and many CD drives can also write (record) data onto CDs. If you have a recordable disk drive, you can store copies of your files on blank CDs. You can also use a CD drive to play music CDs on your computer.

Floppy disk drive
Floppy disk drives store information on floppy disks, also called floppies or diskettes. Compared to CDs and DVDs, floppy disks can store only a small amount of data. They also retrieve information more slowly and are more prone to damage. For these reasons, floppy disk drives are less popular than they used to be, although some computers still include them.

Mouse
A mouse is a small device used to point to and select items on your computer screen. Although mice come in many shapes, the typical mouse does look a bit like an actual mouse. It's small, oblong, and connected to the system unit by a long wire that resembles a tail. Some newer mice are wireless.

Keyboard
A keyboard is used mainly for typing text into your computer. Like the keyboard on a typewriter, it has keys for letters and numbers, but it also has special keys:
•
The function keys, found on the top row, perform different functions depending on where they are used.
•
The numeric keypad, located on the right side of most keyboards, allows you to enter numbers quickly.
•
The navigation keys, such as the arrow keys, allow you to move your position within a document or webpage.

Monitor
A monitor displays information in visual form, using text and graphics. The portion of the monitor that displays the information is called the screen. Like a television screen, a computer screen can show still or moving pictures.

Printer
A printer transfers data from a computer onto paper. You don't need a printer to use your computer, but having one allows you to print e‑mail, cards, invitations, announcements, and other materials. Many people also like being able to print their own photos at home.
The two main types of printers are inkjet printers and laser printers. Inkjet printers are the most popular printers for the home. They can print in black and white or in full color and can produce high-quality photographs when used with special paper. Laser printers are faster and generally better able to handle heavy use.

Speakers
Speakers are used to play sound. They may be built into the system unit or connected with cables. Speakers allow you to listen to music and hear sound effects from your computer.

Modem
To connect your computer to the Internet, you need a modem. A modem is a device that sends and receives computer information over a telephone line or high-speed cable. Modems are sometimes built into the system unit, but higher-speed modems are usually separate components.

Ass

1.What is Computer Hardware and Software?

Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The hardware of a computer is infrequently changed, in comparison with software and data, which are "soft" in the sense that they are readily created, modified or erased on the computer. Firmware is a special type of software that rarely, if ever, needs to be changed and so is stored on hardware devices such as read-only memory (ROM) where it is not readily changed (and is, therefore, "firm" rather than just "soft").

Computer software, consisting of programs, enables a computer to perform specific tasks, as opposed to its physical components (hardware) which can only do the tasks they are mechanically designed for. The term includes application software such as word processors which perform productive tasks for users, system software such as operating systems, which interface with hardware to run the necessary services for user-interfaces and applications, and middleware which controls and co-ordinates distributed systems.