What does Pin 9 represents in 8051 microcontroller, VCC, TIMER 0, RESET, p3.0, Expand EA, External amplifier, External amplitude, External Allow input, External access input, Using port 0, which lower order signals are multiplexed., Address bus, Address data bus, Data bus, Control bus, 8051 has four ___ ports which are of 8-bit each., input, output, input/output, data, which alters the program for some time temporary., Interrupts, timer, counters, shifters, How many interrupt signals exist in 8051?, 4, 5, 2, 6, Program will be regained when the power is switched off is called , RAM, DATA MEMORY, ROM, EXTERNAL MEMORY, WHICH IS NOT A FEATURE OF MICRO CONTROLLER, 32 I/O LINES, 4 PORTS, 2 TIMERS, 16 BIT CPU, WHICH IS NOT A 8 BIT REGISTER, STACK POINTER & A REGISTER, B REGISTER & A REGISTER, DPTR & PROGRAM COUNTER, ACCUMULATOR , INTERRUPT 0 IS ENABLED IF, P3.3 IS 0, P3.3 IS 1, P3.2 IS 1, P3.2 IS 0, WHICH IS THE NOT THE CORRECT MEMORY ADDRESS SPACE, 64 KB ONCHIP PROGRAM MEMORY, 64 KB EXTERNAL DATA MEMORY, 128 BYTES INTERNAL DATA MEMORY, 4KB ON CHIP ROM MEMORY, THE BIT ADDRESSABLE AREA IS FROM, 20 H TO 2F H, 30H TO 3F H, 00H TO 20H, 2F TO 7FH, BYTE ADDRESS OF PORT 1 IS, 80H, 90H, A0H, B0H, BYTE ADDRESS OF INTERRUPT PRIORITY CONTROL IS, A8H, 98H, 99H, B8H, DURING CALL INSTRUCTION SP IS, INCREMENTED, DECREMENTED, REMAINS SAME, NONE, NUMBER OF INSTRUCTION SETS, 4, 5, 3, 6, TOTAL NUMBER OF INSTRUCTIONS, 95, 105, 111, 115, MOV A,70H, LOADS ACC WITH THE VALUE 70, LOADS ACC VALUE TO 70H ADDRESS, LOADS 70 H IN A REGISTER , LOADS THE VALUE IN 70H ADDRESS TO ACCUMULATOR, DEC 55H, VALUE 55 IS DECREMENTED BY 1, VALUE IN THE ADDRESS 55H IS DECREMENTED BY 1, ADDRESS 55 IS DECREMENTED BY 1, VALUE 55H IS DECREMENTED BY 2, DAA IS, DECIMAL ADJUST ACCUMULATOR, DATA ACCUMULATOR ADJUST, DATA ADJUST ACCUMULATOR, DECIMAL ACCUMULATOR ADJUST, MOV A, 24H ORL A, #56 THE CONTENT OF A REGISTER WILL BE, 76H, F3H, F6H, 73H, ACALL USES _____ BIT ADDRESS, 16, 11, 8, 4, RETI IS, RETURN, RETURN IMMEDIATELY, RETURN FROM INTERRUPT, RETURN FROM INTERNAL MEMORY, TO MAKE CARRY 1 THE INSTRUCTION USED IS, CLR C, SET C, CPL C, SETB C, PROGRAM COUNTER HOLDS THE, RESULT OF ARITHMETIC OPERATION, ADDRESS OF RESULT TO BE STORED, ADDRESS OF NEXT INSTRUCTION TO BE EXECUTED, ADDRESS OF SUBROUTINE, CODE MEMORY INSTRUCTION IS, MOVC, MOV, MOVX, BOTH MOVX AND MOVC, MOV A,R3 IS, DIRECT ADDRESSING, REGISTER ADDRESSING, INDIRECT ADDRESSING, IMMEDIATE ADDRESSING, THE UNCONDITIONAL JUMP INSTRUCTION IS, JNZ REL, SJMP REL, CJNE A,B, REL, JZ REL, IN MUL AB INSTRUCTION, HIGHER BYTE RESULT IS STORED IN, ACCUMULATOR, A REGISTER, B REGISTER, DPTR, UPON RESET STACK POINTER IS LOADED WITH, 07H, 70H, 00H, 0000H, WHICH BIT IN PROGRAM STATUS WORD (PSW) IS RESERVED OR USER DEFINED, PSW.0, PSW.1, PSW.2, PSW.3, WHICH SFR IS USED TO CONTROL THE MODE OF TIMER/COUNTER, TCON, SCON, TMOD, PCON, WHICH PORT IS CALLED TRUE I/O PORT, PORT 2, PORT 1, PORT 3, PORT 0, WHICH ONE IS NOT THE ALTERNATE FUNCTION OF PORT 3, TRANSMISSION, READ, PARITY, TIMER 0, THE BAUD RATE IN 8051 IS DONE WITH THE HELP OF, TIMER, COUNTER, SERIAL PORT, PC, AFTER ARITHMETIC OPERATION, FLAG BITS OF WHICH REGISTER IS AFFECTED, SP, DPTR, PC, PSW, WHICH OF THE FOLLOWING INSTRUCTION WILL MOVE THE CONTENT OF REGISTER 3 TO ACCUMULATOR, MOV 3R,A, MOV A, @R3, MOV A,R3, MOV @3R,A, NO OF I/O LINES THAT HAS DUAL PURPOSE ROLE, 24, 32, 16, 8, AN ALTERNATE FUNCTION OF PORT PIN P3.6 IN 8051 IS, SERIAL PORT INPUT, SERIAL PORT OUTPUT, MEMORY WRITE, MEMORY READ, THE COMMAND RL WILL, ROTATE THE CARRY LEFT, ROTATE ACCUMUATOR CONTENT LEFT, ROTATE ACCUMULATOR CONTENT TO THE LEFT THROUGH CARRY, REVERSE THE PSW BIT VALUES.

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