Recent questions in Computer Organization

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 ...

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 ...

Consider the sequence of $8085$ instructions given below.$\text{LXI H, 9258, MOV A, M, CMA, MOV M, A}$Which one of the following is performed by this sequence?Contents of...

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...

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 ...

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} \...

When a $\text{CPU}$ is interrupted, itstops execution of instructionsacknowledges interrupt and branches of subroutineacknowledges interrupt and continuesacknowledges int...

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...

An 'Assembler' for a microprocessor is used forassembly of processors in a production linecreation of new programmes using different modulestranslation of a program from ...

The total number of memory accesses involved (inclusive of the $op$ – code fetch) when an $8085$ processor executes the instruction $\text{LDA}$ $2003$ is$1$$2$$3$$4$

The following sequence of instructions are executed by an $8085$ microprocessor:$\begin{matrix}1000 &LXI & SP &27 \; FF \\ 1000 &CALL & & 1006\\ 1006 &POP \; H & & \...

An $\frac{\mathrm{I}}{\mathrm{O}}$ peripheral device shown in Figure $(b)$ below is to be interfaced to an $8085$ microprocessor. To select the $\frac{\mathrm{I}}{\mathrm...

Following is the segment of a $8085$ assembly language program$\text{LXISP,EFFFH}$$\text{CALL 3000 H}$$3000 \mathrm{H}: \mathrm{LXIH}, 3 \mathrm{CF} 4 \mathrm{H}$$\text{P...

An $8255$ chip is interfaced to an $8085$ microprocessor system as an $\mathrm{I} / \mathrm{O}$ mapped $\mathrm{I} / \mathrm{O}$ as shown in the figure. The address lines...

An $8085$ assembly language program is given below.Line 1: MVI A,B5H 2: MVI B0EH 3: XRI 69H 4: ADD B 5: ANI 9BH 6: CPI 9FH 7: STA 3010H 8: HLTThe contents of the accumula...

An $8085$ assembly language program is given below.Line 1: MVI A, B5H 2: MVI B, 0EH 3: XRI 69H 4: ADD B 5: ANI 9BH 6: CPI 9FH 7: STA 3010H 8: HLT After execution of line ...

An $8085$ executes the following instructions$\begin{array}{lll}2710 & \text { LXI} & \text{H,} & \text{30A0H } \\2713 & \text { DAD} & \text{H } \\2714 & \text { PCHL ...

Which of the following is (are) valid $\text{FORTRAN} 77$ statement(s)?$\mathrm{DO} \; 131=1$$\mathrm{A}=\mathrm{DIM}^{* * *} 7$$\text{READ}$ $=15.0$$\text{GOTO}$ $3=10$

For $\mathrm{X}=4.0$, the value of $1$ in the $\text{FORTRAN}$ $77$ statement$I=-2^{* *} 2+5.0 ^* X / X ^* 3+\frac{3}{4} \text { is}$___________.

In a microprocessor, the register which holds the address of the next instruction to be fetched isAccumulatorProgram CounterStack PointerInstruction Registor