Introduction-
The processing unit in a computer interest instructions given in a programs and carries out the instructions. Processors are designed to interpret a specified number of instruction codes. Each instruction code is a string of binary digits. All processors have input/outputs instructions, arithmetic instructions, to manipulate characters. The number and type of instructions available differ from processor to processor.
A memory or store is required in a computer to store programs and the data processed by programs. A memory is made up of a large number of cells, with each cell capable of storing one bit. The cells may be organized as a set of addressable words, each word storing a sequence of bits. In one such address of the word. This organization, called a Random Access Memory (RAM), is used as the main memory of computers. Another organization arranges cells in a linear sequence to from a serial access memory.
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