Computer Hardware

Rita Ester

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Computer

Hardware + Software Electronic device that

Takes data in

Input devices

Outputs information

Output devices

Stores data

Storage devices

Processes data

CPU

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Mother Board

contains the computer's basic circuits and parts

BIOS

BUS

RAMCPU

BUS BUSBattery Expansion Slots

and Expansion Cards

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BIOS

Basic Input Output System, wakes up the computer

when you turn it on (Boot process), starts the operating system, Is stored on a ROM chip.

Read Only Memory.

The battery supports the ROM chip.

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Chip

Integrated circuit Tiny piece of silicon with electronic

circuits CPU or memory (RAM and ROM) on a

chip

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CPU

Central Processing Unit (Micro-)processor Brain of the computer. Processes data and instructions. Contains the ALU.

Arithmetic Logic Unit Has a clock rate.

Sets the computer speed.Speed measured as MHz, GHz.

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System Properties

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RAM

Random Access Memory Holds data and programs

while the CPU uses them Everything disappears when power is off Types: SDRAM, RDRAM.

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BUS

On the mother board Path for data

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Expansion Card

Expands the capabilies of the CPU Example:

Graphics card. Sits in an expansion slot.