Computer is an electronic device that accepts data as input, processes the input data by per-
forming mathematical and logical operations on it, and gives the desired output. The com-
puter system consists of four parts
: (1) Hardware, (2) Software, (3) Data, and (4) Users. The
parts of computer system are shown in Figure 1.13.
1. Hardwareconsists of the mechanical parts that make up the computer as a machine.
The hardware consists of physical devices of the computer. The devices are required
for input, output, storage and processing of the data. Keyboard, monitor, hard ...
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