Question | Answer |
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. |