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Recent questions tagged computer-organization

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GATE ECE 2026 | Question: 32
The address of the first location of a $256$ kilo byte $(\mathrm{KB})$ memory is $(2500)_{\mathrm{H}}$.Choose the correct address of the last location of the memory.$(2 \...
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GATE ECE 2005 | Question: 81b
Statement for Linked Answer Questions $81 a$ and $81 b$:Consider an $8085$ microprocessor systemIf in addition following code exists from $019 \mathrm{H}$ onwards,$\text{...
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GATE ECE 1997 | Question 2.5
Each cell of a Static Random Access Memory contains$6 \; \text{MOS}$ transistors$4 \; \mathrm{MOS}$ transistors and $2$ capacitors$2 \; \text{MOS}$ transistors and $4$ ca...
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GATE ECE 1997 | Question 2.10
In an $8085 \; \mu \; \mathrm{P}$ system, the $\text{RST}$ instruction will cause an interruptonly if an interrupt service routine is not being executedonly if a bit in t...
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GATE ECE 1997 | Question 4.2
The decoding circuit shown in the figure is has been used to generate the active low chip select signal for a microprocessor peripheral. (The address lines are designated...
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GATE ECE 1997 | Question 4.3
The following insturctions have been executed by an $8085 \; \mu \mathrm{P}$$\begin{array}{cl}\text { ADDRESS (HEX) } & \text { INSTRUCTION } \\ 6010 & \text { LXI H, 8A ...
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GATE ECE 1997 | Question 4.4
A signed integer has been stored in a byte using the $2$'s complement format. We wish to store the same integer in a $16$ bit word. We shouldcopy the original byte to the...
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GATE ECE 1997 | Question 5.3
(1) An $8$-bit wide $5$ word sequential memory will have$8$ Fixed $\text{‘AND'}$ gates and $4$ programmable $\text{‘OR'}$ gates(2) A $256 \times 4$ $\text{EFROM}$ hasEigh...
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GATE ECE 1997 | Question 5.5
While moving data between registers of the $8085$ and the stack(1) a $\text{PUSH}$ instructionPre increments the stack pointer(2) a $\text{POP}$ instructionPost increment...
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GATE ECE 2000 | Question 1.16
The number of hardware interrupts (which require an external signal to interrupt) present in an $8085$ microprocessor are$1$$4$$5$$13$
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GATE ECE 2000 | Question 1.20
In the $8085$ microprocessor, the $\text{RST6}$ instruction transfers the program execution to the following location:$30 \mathrm{~H}$$24 \mathrm{~H}$$48 \mathrm{~H}$$60 ...
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GATE ECE 2000 | Question 2.10
The contents of Register $\text{(B)}$ and Accumulator $\text{(A)}$ of $8085$ microprocessor are $49 \mathrm{H}$ and $3 \mathrm{AH}$ respectively. The contents of $\mathrm...
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GATE ECE 2000 | Question 17
(a) The program and machine code for an $8085$ microprocessor are given by$\begin{array}{lll}3 \mathrm{E} & \text {MVI} & \text {A} \\ \text {C3} & & \\ 00 & \text {NOP} ...
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GATE ECE 1999 | Question 13
An $8085$ assembly language program is given below$\begin{array}{ll} & \text{ MVIC, 03H } \\ & \text { LXIH, 2000H } \\ \text { LOOP : } & \text { MOV A, M } \\ & \text {...
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GATE ECE 2001 | Question: 1.13
An $8085$ microprocessor based system uses a $4 \mathrm{K} \times 8 \text{bit RAM}$ whose starting address is $\text{AA00 H}$. The address of the last byte in this $\text...
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GATE ECE 2001 | Question: 12
Consider the following sequence of instructions for an $8085$ microprocessor based system.$\begin{array}{lll} \text{Memory Address} & \text{Instructions} \\ \text{FF00} &...
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GATE ECE 2002 | Question: 2.13
Consider the following assembly language program.$\begin{array}{rll} \text { MVI } & \text { B,87H } \\ \text { MOV } & \text { A, B } \\ \text { START : JMP } & \text { ...
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GATE ECE 1998 | Question 2.6
An $\text{I/O}$ processor control the flow of information betweencache memory and $\text{I / O}$ devicesmain memory and $\text{I / O}$ devicestwo $\text{I/ O}$ devicescac...
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GATE ECE 1998 | Question 2.10
An instruction used to set the carry Flag in a computer can be classified asdata transferarithmeticlogicalprogram control
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GATE ECE 1998 | Question 17
Write a short assembly language program, without using any arithmetic instruction, to store hexadecimal $5D$ in the flag register of $8085$ microprocessor. Data in other ...
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GATE ECE 2003 | Question: 60
In an $8085$ microprocessor, the instruction CMP $B$ has been executed while the content of the accumulator is less than that of register $B$. As a resultCarry flag will ...
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1 1 answer
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GATE ECE 2004 | Question: 14
The range of signed decimal numbers that can be represented by $6$-bite $1$'s complement number is$-31$ to $+31$$-63$ to $+64$$-64$ to $+63$$-32$ to $+31$
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GATE ECE 2004 | Question: 54
The $8255$ Programmable Peripheral Interface is used as described below.An A/D converter is interfaced to a microprocessor through $8255.$ The conversion is initiated by ...
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GATE ECE 2004 | Question: 55
The number of memory cycles required to execute the following $8085$ instructions$\text{LDA 3000 H}$$\text{LXI D, FOF 1 H}$would be$2$ for (I) and $2$ for (II)$4$ for (I)...
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GATE ECE 2004 | Question: 59
It is desired to multiply the numbers $0 \mathrm{AH}$ by $0 \mathrm{BH}$ and store the result in the accumulator. The numbers are available in registers $B$ and $C$ respe...
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GATE ECE 2005 | Question: 58
What memory address range is $\text{NOT}$ represented by chip $\# \; 1$ and chip $\# \; 2$ in the figure $\text{A}_{0}$ to $\text{A}_{15}$ in this figure are the address ...
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GATE ECE 2005 | Question: 81a
Statement for Linked Answer Questions 81 a and 81 b:Consider an $8085$ microprocessor systemThe following program starts at location $0100 \mathrm{H}$.$\begin{array}{l} \...
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GATE ECE 1995 | Question 1.31
When a $\text{CPU}$ is interrupted, itstops execution of instructionsacknowledges interrupt and branches of subroutineacknowledges interrupt and continuesacknowledges int...
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GATE ECE 1995 | Question 1.34
A $\text{‘DMA'}$ transfer impliesdirect transfer of data between memory and accumulatordirect transfer of data between memory and I/O devices without the use of $\mu p$tr...
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GATE ECE 1995 | Question 1.35
An 'Assembler' for a microprocessor is used forassembly of processors in a production linecreation of new programmes using different modulestranslation of a program from ...
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