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Consumer Electronics by S. P. Bali

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MICROCONTROLLER

Figure 48.4 shows the block diagram of a typical microcontroller which is a true computer on a chip. The design incorporates all of the features found in a microprocessor CPU (central processing unit) : ALU (arithmetic logic unit), PC (program counter), SP (stack pointer), and registers. It also has added the other features needed to make a complete computer : ROM, RAM, parallel I/O, serial I/O, counters, and a clock circuit.

 

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Fig. 48.4 Block diagram of a typical microcontroller

 

Like the microprocessor, a microcontroller is a general purpose device, but one that is meant to read data, perform limited calculations on the ...

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