computer system

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Recommended: Chapter 17 fundamentals of computer systems

INTRODUCTION A computer is an electronic machine that works by sequential reading of set of instruction, organised by program, which make it execute logical operations on binary numbers. The computer consists of hardware and software. And this study will turn around hardware components and their interconnection. Diagram of computer 1.1 Analyse hardware components and their interconnections The different hardware components are: 1. PSU Power supply Unit Diagram of PSU In a simple sentence it’s a supply of a computer. The power supply provides power to all the components of the computer. The PSU provides electrical power to all the components of the computer. The PSU converts the AC voltage of 12V or 230V in various voltages used by the motherboard and peripherals. All components of the computer require electrical power, DVD, the motherboard, the fans, CPU, graphics card. They are connected with an AT, ATX connector to the motherboard. Diagram of AT and ATX AT is a format of power supply used for older computers and the computers type PENTIUM; ATX is a format of power supply used for new computers and the computers type PENTIUM II; is connected to the motherboard. . 2. CPU/ Processor : Central Processing Unit The CPU is the component of the computer that runs computer programs, is the brain of the computer. The CPU is located inside the computer case on the motherboard. The CPU fits into the motherboard’s CPU socket. The CPU speed is measured in MHz (megahertz) and GHz (gigahertz) Diagram of CPU in the motherboard 3. Motherboard Is the main printed circuit which is located inside the computer. All components of the PC are connected to the motherb... ... middle of paper ... ... network. 14. Keyboard Is the device that allows you to enter information into a computer. Computer keyboards are similar to electric-typewriter keyboard but contains punctuation and alphanumeric. Diagram of keyboard The keyboard is connected to central unit with two types of connections: 1. PS2, this type of connection is very common for keyboards 2. USB, the keyboard is connected to the computer via a USB cable Diagram of PS2 and USB keyboard’s connection 15. Mouse The mouse is a pointing device for computer. It is composed of a fact box to keep handy, on which there is one or more buttons and dial in most cases. There are three types connectors mouse: Wired, wireless and wireless and battery. Diagram of a mouse The mouse is connected to the central unit with the PS2 and USB connection; like the keyboard. Diagram of ps2 connection of mouse.

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