MEMORY ORGANIZATION IN 8051
ARCHITECTURE OF 8085
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4
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8
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16
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32
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Detailed explanation-1: -8051 consists of 4 parallel ports of 8 bit each thereby providing 32 input-output pins.
Detailed explanation-2: -Port 0 (Pin No 32 – Pin No 39) It has 8 pins (32 to 39). It can be used for input or output. Unlike P1, P2, and P3 ports, we normally connect P0 to 10K-ohm pull-up resistors to use it as an input or output port being an open drain. It is also designated as AD0-AD7, allowing it to be used as both address and data.
Detailed explanation-3: -8-bit arithmetic logic unit (ALU) and accumulator, 8-bit registers (one 16-bit register with special move instructions), 8-bit data bus and 2×16-bit address buses, program counter, data pointer, and related 8/11/16-bit operations; hence it is mainly an 8-bit microcontroller.