Computer is th programmable machine that can store, retrieve, and process data. Today's computers have at least one CPU that performs most calculations and includes a main memory, a control unit, and an arithmetic logic unit. Acomputer is distinguished from a calculating machine, such as an electronic calculator, by being able to store a program by the number and complexity of the operations it can perform, and by its ability to process, store, and retrieve data without human intervention.There are 2 types of computer production. These are:A>Analog Computers
B>Digital Computers
A>Analog Computers
An analog computer represents data as physical quantities and operates on the data by manipulating the quantities. It is designed to process data in which the variable quantities.The key component of the analog computer is the operational amplifier and the computer's capacity is determined by the number of amplifiers it contains.
B>Digital Computers
A digital computer is designed to process data in numerical form. its circuits perform directly the mathematical operations of addition, subtraction, multiplication, and division.Digital computers are used for reservations systems, scientific investigation, data-processing and word-processing applications, desktop publishing, electronic game, and many other purposes.
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