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Hardware Basics 0512

chapter 2 vocab.

Arithmetic Logic Unit, ALU Is the sector of the CPU that performs the mathematical calculations that are required in many data processing programs.
Bit Is the smallest unit of binary information.
Byte Is made up of eight bits.
Cache Provides a temporary storage area that provides a quick access to information.
Input Devices Allows data to be inputted into the computer.
Resolution Defines the clarityu of the image that is seen on the computer screen.
Pixels Is a single colored square on the screen.
Lumens Measure the brightness of a projector.
Hard Disk Drive Stores large amounts of information and is located within the computer.
External Hard Disk Drives Allows the transfer of information from one physical location to another.
Central Processing Unit, CPU Is located within the Motherboard and is the brain of the computer. It allows commands to be carried out.
Random Access Memory, RAM Is temporary memory that is designed to hold new data and is available only while the computer is turned on.
Read-Only Memory, ROM Is permanent internal memory inside the computer. The memory stored by the ROM is inaccessible by the user and is used to store the instructions of programs.
Megabytes Is used to measure the amount of information a computer can hold; it stores about one million bytes of information.
Gigabytes Is used to measure the amount of information a computer can hold; it stores about one billion bytes of information.
Created by: dparks88