Q 1 The internal RAM memory of the

Q. 1 The internal RAM memory of the 8051 is: A. 32 bytes B. 64 bytes C. 128 bytes D. 256 bytes

A. 1 The internal RAM memory of the 8051 is: A. 32 bytes B. 64 bytes C. 128 bytes D. 256 bytes

Q. 2 The 8051 has ____ 16 -bit counter/timers. A. 1 B. 2 C. 3 D. 4

A. 2 The 8051 has ____ 16 -bit counter/timers. A. 1 B. 2 C. 3 D. 4

Q. 3 The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code. A. True B. False

A. 3 The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code. A. True B. False

Q. 4 The 8051 can handle ____ interrupt sources. A. 3 B. 4 C. 5 D. 6

A. 4 The 8051 can handle ____ interrupt sources. A. 3 B. 4 C. 5 D. 6

Q. 5 MOV A, @ R 1 will: A. copy R 1 to the accumulator B. copy the accumulator to R 1 C. copy the contents of memory whose address is in R 1 to the accumulator D. copy the accumulator to the contents of memory whose address is in R 1

A. 5 MOV A, @ R 1 will: A. copy R 1 to the accumulator B. copy the accumulator to R 1 C. copy the contents of memory whose address is in R 1 to the accumulator D. copy the accumulator to the contents of memory whose address is in R 1

Q. 6 An alternate function of port pin P 3. 4 in the 8051 is: A. Timer 0 B. Timer 1 C. interrupt 0 D. interrupt 1

A. 6 An alternate function of port pin P 3. 4 in the 8051 is: A. Timer 0 B. Timer 1 C. interrupt 0 D. interrupt 1

Q. 7 A macro can be used a) in data segment b) to represent directives c) to represent statements d) all of the mentioned

A. 7 A macro can be used a) in data segment b) to represent directives c) to represent statements d) all of the mentioned

Q. 8 The end of a macro can be represented by the directive a) END b) ENDS c) ENDM d) ENDD

A. 8 The end of a macro can be represented by the directive a) END b) ENDS c) ENDM d) ENDD

Q. 9 All the functions of the ports of 8255 are achieved by programming the bits of an internal register called a) data bus control b) read logic control c) control word register d) none

A. 9 All the functions of the ports of 8255 are achieved by programming the bits of an internal register called a) data bus control b) read logic control c) control word register d) none

Q. 10 In 8257 (DMA), each of the four channels has a) a pair of two 8 -bit registers b) a pair of two 16 -bit registers c) one 16 -bit register d) one 8 -bit register

A. 10 In 8257 (DMA), each of the four channels has a) a pair of two 8 -bit registers b) a pair of two 16 -bit registers c) one 16 -bit register d) one 8 -bit register

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Extra question In direct memory access mode, the data transfer takes place a) directly b) indirectly c) directly and indirectly d) none of the mentioned