8051 MICROCONTROLLER
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Most of the registers of 8051 microcontroller are ____ bits wide.
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8
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16
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32
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12
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Explanation:
Detailed explanation-1: -With 8-bit data type, any data type larger than 8-bits must be broken into 8-bit chunks before it is processed. The most widely used registers of the 8051 are A (accumulator), B, R0-R7, DPTR (data pointer), and PC (program counter). All these registers are of 8-bits, except DPTR and PC.
Detailed explanation-2: -The 8051 contains two 16-bit registers: the program counter (PC) and the data pointer (DPTR).
Detailed explanation-3: -The 8051 is called an 8-bit microcontroller because it processes 8 bits of data every machine cycle. All assembly instructions happen 8-bits at a time. Also, all internal registers are 8-bit in size and all read and write operations happen 8-bits at a time.
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