English
Hindi

Question

Download Solution PDF

The instruction RET executes with the following series of machine cycle

This question was previously asked in
ESE Electrical 2016 Paper 2: Official Paper
Download PDF Attempt in App
View all UPSC IES Papers >
  1. Fetch, read, write
  2. Fetch, write, write
  3. Fetch, read, read
  4. Fetch, read

Answer (Detailed Solution Below)

Option 3 : Fetch, read, read
Free Tests
View all Free tests >
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
20 Qs. 40 Marks 24 Mins
Start Now

Detailed Solution

Download Solution PDF

RET (Return):

  • Return to main program unconditionally.
  • It is a one-byte instruction.
  • The execution of this instruction takes three machine cycle i.e. fetch, read, read
  • In first machine cycle, microprocessor fetches the opcode, during second and third machine cycles, it reads the contents of top of stack.

Download Solution PDF
Latest UPSC IES Updates

Last updated on Jul 2, 2025

-> ESE Mains 2025 exam date has been released. As per the schedule, UPSC IES Mains exam 2025 will be conducted on August 10. 

-> UPSC ESE result 2025 has been released. Candidates can download the ESE prelims result PDF from here.

->  UPSC ESE admit card 2025 for the prelims exam has been released. 

-> The UPSC IES Prelims 2025 will be held on 8th June 2025.

-> The selection process includes a Prelims and a Mains Examination, followed by a Personality Test/Interview.

-> Candidates should attempt the UPSC IES mock tests to increase their efficiency. The UPSC IES previous year papers can be downloaded here.

Exams Tests Super Practice

More Machine Cycles and Clock Cycles Questions

Q1.The IO/M' signal in the 8085 microprocessor specifies _______.
Q2.Match the following: 1. MOV A,B a. 4 Machine cycles 2. MOV A,M b. 3 Machine cycles 3. LDA 3000H c. 1 Machine cycles 4. LXI F0F1H d. 2 Machine cycles
Q3.In pulse transmitter, the duty cycle is defined as _________.
Q4.Which one of the following is not a general operation of machine cycle in a central processing unit ?
Q5.When using a sequential code to design a combinational logic in VHDL, if a complete truth table is not defined, the synthesis tool will implement a _______ which is not required.
Q6.Which of the following statements with reference to a generic microprocessor is correct?
Q7.The instruction RET executes with the following series of machine cycle
Q8. If Sys clock frequency is > 4 * clk_ext frequency. What is the functionality of the above circuit?
Q9.In a digital circuit, the set-up time violation can be fixed by

More Microprocessors Questions

Q1._______ interrupt is a positive edge sensitive interrupt and can be triggered with a short pulse.
Q2.There are ______ register banks in the 8051 microcontroller.
Q3.Analyse the given program for 8085 and answer the question that follows. MVI B, 06h MVI A, F2H ADD B What is the content of Accumulator Register after the execution of the given program?
Q4.The address range of the bit addressable memory area in the 8051 microcontroller is ______.
Q5.In 8051 microcontroller, Special Function Registers can be addressed using addresses from _______.
Q6.In the 8085 microprocessor, when RD signal is low and IO/M signal is high, the instruction is in the _______ cycle of execution.
Q7._______ is a DMA controller which has four independent channels, CH0 to CH3.
Q8.In the 8085 microprocessor, ________ instruction is used to identify pending interrupts.
Q9.The IO/M' signal in the 8085 microprocessor specifies _______.
Q10.Which of the following is a key feature of a microprocessor-based overcurrent relay that enhances its performance in fault detection?
Suggested Test Series
View All >
UPSC ESE (IES) Civil Mock Test Series
116 Total Tests with 1 Free Tests
Start Free Test
UPSC ESE (IES) Electrical Mock Test Series
68 Total Tests with   0 Free Tests
Start Free Test

UPPSC AE Important Links

VacancyEligibility CriteriaExam PatternSyllabusSalary & Job ProfileResult

More Digital Electronics Questions

Q1.In an asynchronous counter, the clock input of each flip-flop except first flip-flop is connected to:
Q2._______ interrupt is a positive edge sensitive interrupt and can be triggered with a short pulse.
Q3.What is the output of a EX-OR gate when both inputs are '1'?
Q4.A positive edge-triggered T Flip-Flop has T = 1. If the current output Q is 0, what will be the output Q after 3 clock pulses?
Q5.What is the Boolean expression for the Carry-out (C) output of a Half Adder?
Q6.There are ______ register banks in the 8051 microcontroller.
Q7.Analyse the given program for 8085 and answer the question that follows. MVI B, 06h MVI A, F2H ADD B What is the content of Accumulator Register after the execution of the given program?
Q8.Which combination of symbols represents an XOR (Exclusive-OR) gate?
Q9.In a priority encoder, what happens when two or more input lines are active at the same time?
Q10.How many clock pulses are required to load n bits into an n-bit SIPO shift register?
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti flush all teen patti teen patti gold