INTRODUCTION TO MICROPEOCESSOR
MICRO PROCESSOR AND MICRO CONTROLLER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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. On power up, the 8051 uses which RAM locations for register R0-R7
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00-2F
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00-07
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00-7F
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00-0F
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Explanation:
Detailed explanation-1: -The answer is register bank 0; that is, RAM locations from 0 to 7 are accessed with the names R0 to R7 when programming the 8051.
Detailed explanation-2: -The standard 8051 comes with 4K ROM, 128 bytes RAM, 4 8bit ports and 2 timer counters. Other members of the family are the ROMless 8031, 8052 with 256 bytes of RAM and 3 counter/timers etc.
Detailed explanation-3: -The 8051 Microcontroller four Ports which can be used as Input and/or Output. These four ports are P0, P1, P2 and P3. Each Port has a corresponding register with same names (the Port Registers are also P0, P1, P2 and P3). The addresses of the Port Registers are as follows: P0 – 80H, P1 – 90H, P2 – A0H and P2 – B0H.
There is 1 question to complete.