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A+ Test Prep Tutorials

The following online study guide is designed to help you with your Comptia A+ test prep. You can discuss any questions or comments that you may have, either on these study guides or on the Comptia A+ test on our community forum.

Glossary

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A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q| R | S | T | U | V | W | X | Y | Z

A

  • ASCII  American Standard Code for Information Interchange - A standard character-coding scheme used by most computers to display letters, digits and special characters.  go to page

  • AT  It is a standard for keyboard.  go to page
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B

  • BIOS  Basic Input Output System has instructions in the chip to start the computer and check the components of a computer.  go to page
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C

  • Clock Speed  The rate at which a CPU is able to perform instructions. Clock speed is measured in megahertz (MHz), with 1MHz representing a million clock ticks per second. For a given CPU architecture, the faster the clock speed, the faster the computer. When used to compare CPUs with different architectures, clock speed is a less reliable indicator of performance.  go to page
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I

  • IDE  Stands for “Integrated Device Electronics” an industry standard.  go to page

  • ISA  PCI and ISA are industry standards that define the speed and the functionality of a device.  go to page
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M

  • Memory Buses  Buses are the circuit path that carries data or current; memory buses are paths or circuits that are designed for memory.  

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P

  • PCI   PCI and ISA are industry standards that define the speed and the functionality of a device.  go to page

  • Port  Is a connecting point to connect devices.  go to page

  • Processor  It is the brain of a computer, which processes the data and gives the output.  go to page
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S

  • SCSI  Stands for “Small Computer System Interface” an industry standard.  go to page
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