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Program Design

Hardware
The term hardware describes the physical parts of your computer which you can physically touch or see such as your monitor, case, disk drives, microprocessor and other physical parts.

In the electronics and especially computer industries, computer hardware specifically means the physical or tangible parts of the equipment, such as circuit boards, keyboards, monitors etc., in contrast to non-physical software running on the computer or other device.

Software
The term software describes the programs that run on your system. This includes your computer operating system and other computer programs which run. Software is written in a computer language (such as Basic, C, Java, or others) by programmers. The computer language is in a text format and can be read by a person although if you do not understand the structure and rules of the language you may not understand it very well. Once a program is written, an operation is performed on it which is called compiling. Compiling is the process of changing the textual written language into a binary language which can be understood by the computer.
Writing these text files and converting them to computer readable files is the way operating systems and most application programs are created.

DATA PROCESSING CYCLE.

processing cycle
Sequence of steps performed repeatedly by a computer in the execution of a program. The computer's central processing unit (CPU) continuously works through a loop, involving fetching a program instruction from memory, fetching any data it needs, operating on the data, and storing the result in the memory, before fetching another program instruction.
The data processing cycle
The data processing cycle is the order in which data is processed. There are four stages:-


Programming languages

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