* What is a Computer?
* com·put·er       pronunciation key  (km-pytr)
n.
* A device that computes, especially a programmable electronic machine that performs high-speed mathematical or logical trading operations or that assembles, stores, correlates, or otherwise processes information.
* One who computes.
* (American Heritage Dictionary, quaternary ed. Pub. 2000)
THE LANGUAGE OF COMPUTERS
Binary Numbers 2 of 3
* Kilobytes, Megabytes, and Gigabytes
* If you understand that a byte is one character in our language, youve got it made because:
* 1000 bytes = 1 kilobyte
* (1,000 characters = 1 kilobyte)
* 1,000,000 bytes = 1 megabyte
* (1,000,000 characters = 1 megabyte)
* 1,000,000,000 bytes = 1 gigabyte (1,000,000,000 characters = 1 gigabyte)
* Hardware Vs. Software
If you can touch it, its hardware.
Uses for a PC
* vocalise Processing
* Desktop Publishing
* Database Management
* Spreadsheets
* Communication
* Finance
* Education
* Entertainment
* News and Information
* Doorstop
SYSTEM COMPONENTS
mainframe computer/PROCESSOR
* The CPU refers to the microprocessor chip. sometimes the Tower is called the CPU.
* Its speed is measured in megacycle per second (MHZ) (Millions of cycles per second) or Gigahertz (GHZ) Billions of cycles per second.
* (A cycle is the time required for the CPU to execute an instruction step).
storm : random access memory
* Ram is the memory used by the computer to run programs.
* The get of Ram available will determine how fast a program will run and how many windows can be open at one time.
Ram memory is considered vaporific because it disappears when the power is sour off.
Hard Drive
* The Hard Drive is the computers main, coherent term storage.
* It is referred to as non-volatile storage, because it does not disappear when the power is turned off.
* The size of the Hard Drive is measured in Gigabytes. (Billions of Bytes).
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