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Prg 210 Computer Operations, Solving Problems, and Algorithms.

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PRG210
Computer Operations, Solving Problems, and
Algorithms
University of Phoenix
Mike VanderMeulen
April 22, 2010

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Size doesn’t matter when it comes to a computer; for instance, computers (no matter the
size) can perform the same tasks if given enough storage ability and time. A cell phone is as
much a "computer" as the one that sits on a desk in regard to basic computer operations.
According to eHow (1999-2010), “Basic computer operations are often broken down into four
area but there are six when pertaining to a pseudo code algorithm, which is a detailed, readable
description--not in programming language--of what a computer program must do.”
Basic computer operations
The following are the six basic computer operations:
1. Receive Data - a computer received data input from a particular source (flash
drive, scanners, keyboard, rtc); the verbs GET and READ are utilized in
pseudocode. Read is exercised when the algorithm is to obtain input from the file
whereas GET is used when the algorithm is to receive input from the keyboard,
scanner, or other device. This task can be completed by the input component of
the computer.
2. Output Data – just the opposite of receiving data, a computer can send date or
output data to devices such as printers or modems; this is done when a computer
is prompted to take action. When one sends a file to the printer that is considered
output. This can be done by using the output components.
3. Store Data - a computer can allot a value to a memory location. The following
three instances in which to write pseudocode to assign a value.

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To give data an early value in pseudocode, the verbs SET, or INITIALIZE
is used.
To allocate a value as a result of some processing, the symbols ‘=’ or ‘
← 
are written.
To save a variable for later use, the verbs STORE, or SAVE may be used.
Once a program is installed on a computer that program is stored to a memory location
chosen by the PC operator or the computer. These tasks are performed by processing
component.
4. Process Data - Computers have the ability to repeat groups of actions and to
process data. When one has a sequence that needs to be repeated, two special
keywords are used, ENDDO and DOWHILE are used in pseudocode. Anything
needing to be repeated is followed by DOWHILE, the keyword ENDDO acts as a
delimiter. A computer
5. , can also run the various software programs or application with help of
processing component.
5. Performing Calculations - Most computer programs command the computer to
execute precise mathematical calculations; a programmer can use either symbols
or words. Symbols that can be written in pseudocode are: + for add, - for subtract,
* for multiply, / for divide, and () for parentheses. Orders of operation are when
writing calculations for the computer. The first calculation will be the parentheses,
than multiplication or division from left to right then any addition or subtraction
also from left to right. These calculations can be done by processing component
of the computer.

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