Page-15

Computer Science

211)What do the content of the program counter specify?
The address of the instruction being executing The count of the number of instructions executed so far
The address of the instruction to be executed next The address of the instruction executed las
Answer :

212)Which of the following interrupts has lowest Priority?
TRAP RST 6.5
RST 7.5 INTR
Answer :

213)The interrupt service routine is serviced
immediately on receopt of request after the executing the current instruction
at the end of current machine cycle none of these
Answer :

214)What do the content of the stack pointer specify?
Address of the top of stack Address of bottom of stack
Content of the top of stack content of the bottom of stack
Answer :

215)Even after a Reset operation which of the following interrupts remain enable?
RST 7.5 RST 6.5
TRAP RST 5.5
Answer :

216)In order to enable INTR interrupt, which of the following instructions is/are needed?
EI only SIM only
both EI and SIM none
Answer :

217)What do the content of Instruction register specify?
Operand of the instruction being executed Op-code of the instruction being executed
Op-code of the instruction to be executed next Operand of the instruction to be executed next
Answer :


218)How many lines are there in address bus and data bus of 8085 microprocessor respectively?
12, 8 8, 8
16, 8 8, 16
Answer :

219)How many interrupt control lines are there in 8085 microprocessor
6 8
10 16
Answer :

220)What is the memory word size of 8085 microprocessor
8 bits 12 bits
16 bits 20 bits
Answer :

221)What is the size of the accumulator (register A) 8085 microprocessor?
6 bits 8 bits
12 bits 16 bits
Answer :

222)What is the length of instruction register 8085 microprocessor?
8 bits 16 bits
32 bits 64 bits
Answer :

223)Waht is the length of program counter (PC) 8085 microprocessor?
8 bits 12 bits
16 bits 32 bits
Answer :

224)What is the length of SP (satck pointer) of 8085 microprocessor?
8 bits 16 bits
12 bits 32 bits
Answer :

225)What is the length of status register of 8085 microprocessor?
8 bits 16 bits
12 bits 32 bits
Answer :

This is page:15
Disclaimer: We have taken otmost care to keep the information error free. The site is not responsible for any kind of damage of whatsoever nature.
©Copy right reserved