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C2 Vocabulary 0430

Control Unit Retrieves the instructions and sends command signals to the rest of the computer and tells the other systems what to do.
Arithmetic Log Unit (ALU) is the sector of the CPU that performs the mathematical calculations that are required in many data processing programs.
Memory Unit Allows for the storage of information.
RAM (random access memory) Is temporary memory that is designed to hold new data and is available only while the computer is turned on.
ROM (read-only memory) Is permanent internal memory inside the system, is inaccessible to the user, and is used to store instructions that are installed or programmed at the manufacturer.
Binary Coding System A code made up of a series of zeros and ones.
Bit Is the smallest unit of binary information.
Byte (Equals 8 bites) can represent one aplhabetic (A,B,C) or one numeric (1,2,3) character of information.
Cache Provides a temporary storage area that provides a quick access to information.
Peripheral Device Uses 1)Input the information 2) Output the information into a form that is easily read by the user 3) Store the information for later use.
Anti-glare filters are clear screens that fit over a computer monitor to reduce glare from over head lights and large windows.
Speech output software Audibly speaks screen content and commands
Refreshable Braille Display This device presesnts a line of text from the screen in braille format by raising pinpoints under a membrane. The pinpoints are cleared when the line of text is displayed.
Moisture Guards are thin sheets of plastic that protect keyboards from spills and any unwanted liquids.
Alternative labels are taped or glued to tops of frequently used keys on the standard keyboard.
Created by: ddtwf5