The Computer Flashcards
What is a computer?
A computer is a data processing machine that is capable of processing, storing and giving output, based on the logic given it by the user.
Who created the stored program concept?
John Von Neumann
What is the stored program concept?
This is the concept of strong alternate instructions that will allow the machine to perform automatically, the necessary processing steps within the machine itself.
The components of a computer are divided into two:
Physical and Abstract components
What is the CPU?
It is an electronic circuitry within a computer that carries out the instructions of a computer by performing the basic arithmetic input and output operations specified by the instructions.
What is the Arithmetic Logic Unit?
It contains the logical circuitry used to perform arithmetic, logic and manipulation operations.
What is the Control Unit?
It directs the operation of the processor, telling the computer’s memory input and output devices how to respond to program’s instructions.
Name one responsibility of the CU?
It provides the sequence and timing signal to the various parts of the computer system.
What is the Main Memory?
RAM, it holds the instructions and program data to be executed. The result is also held here before it is transferred to any output device.
What is the difference between ROM and RAM?
RAM is volatile as information on it can be lost but ROM isn’t and can’t be manipulated.
What are the peripheral devices?
Input devices, Output devices, Auxiliary storage devices
What are input devices?
They provide data and control signals to the computer system, e.g. scanner, mouse, keyboard, etc
What are output devices?
They are used to communicate the results of processed data, e.g. speaker, monitor, printer, etc.
What are Auxiliary storage devices?
They store a large amount of information, e.g. CD ROM, flash drives.
What distinguishes the computer from other data processing machines?
The Stored Program Concept
