71. A stake machine pushes operands on a stack and evaluates binary operators by a pcs (i.e pop/compute/store) where the top two operands are popped computation is performed and the result is pushed onto stack. Evaluation of an expression (x*y)+ (u*v) by Reverse Polish notation in a stack machine needs
72. The first machine cycle of an instruction is always
73. A CDMA system requires $$\frac{{{{\text{E}}_{\text{b}}}}}{{{{\text{I}}_0}}}$$ of 10 dB. Each of the transmitters in the network transmits data at the rate of 1 Kbps with a PN chip rate of 1 Mbps. The maximum number of such users that the network can support is:
74. If instruction RST 5 is written in a program the problem will jump to location
75. In case the code is position dependent, the most suitable addressing mode is
76. The number of pins in microprocessor 8086 is
77. Which one of the following pairs of 8086 microprocessor's interrupt is not correctly matched?
78. Which instruction of 8051 microcontroller is used for reading data from code memory?
79. The following instructions have been executed by an 8085 microprocessor
ADDRESS (HEX)
INSTRUCTION
6010
LXI H, 8A79H
6013
MOV A, L
6014
ADD H
6015
DAA
6016
MOV H, A
6017
PCHL
From which address will the next instruction be fetched?
| ADDRESS (HEX) | INSTRUCTION |
| 6010 | LXI H, 8A79H |
| 6013 | MOV A, L |
| 6014 | ADD H |
| 6015 | DAA |
| 6016 | MOV H, A |
| 6017 | PCHL |
80. Which of the following interrupts is unmaskable interrupts
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