Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

Answer the following problems

problem 1)a) In addition to data transfer operation, mention and describe the different functions supported by the instruction set of normal general purpose processors/microcontrollers. Give relevant exs for each category.

b) Mention the important points to be considered while interfacing external memory to processor/controller. Also describe the steps involved in interfacing.    

c) Describe in brief the architecture of PIC16F877 microcontroller.    

problem 2)a) With the help of a relevant diagram, describe the long distance communication between two computer terminals via telephone lines, using MODEMs. Describe clearly the functions of associated handshake signals.    

b) With the help of a relevant timing diagram, describe the ISA bus protocol for memory mapped I/O read operation with no wait states.    

c) Describe USB bus specifications and protocol with respect to serial communication in embedded systems.

problem 3) For the ADC section of 68HC11 microcontroller, Vref pin is connected to 5V and Gnd pin is grounded. After a certain analog input is converted to digital, the contents of ADRESULT _HI and ADRESULT _LO were found to be F7H and 86H respectively. Determine the analog input value and the channel to which the analog input was applied.

b) What do you mean by watchdog timer? What are the merits and demerits of using watchdog timer facility? Describe the working of watchdog timer facility of PIC16F877 microcontroller.    

c) With the help of a relevant diagram, describe the daisy chain arbitration scheme with respect to handling multiple interrupt requests from peripherals via a single interrupt line of the processor.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M96281

Have any Question? 


Related Questions in Mechanical Engineering

Wind tunnel testing of the concrete reef balls used in

Wind tunnel testing of the concrete reef balls used in artificial reefs is proposed. A typical reef ball (e.g. Figure 1.2) has a diameter of 6 ft, and is immersed in sea water. A scale model is prepared with diameter of ...

Projectdesign a tube bank that will increase the

Project Design a tube bank that will increase the temperature of a 1200 CFM flow of air from 35°F to 100°F. Assume a constant pressure of 1atm. Each tube will have a diameter of 0.5in and a length of 24in. The tube confi ...

1 using the expression for the gradient in polar

1. Using the expression for the gradient in polar coordinates (Appendix A), find the gradient of ψ(r,θ) when Where is the gradient maximum? The terms A and a are constant. 2. Given the following expression for the pressu ...

A system and reservoir are in contact with each other he

A system and reservoir are in contact with each other. he volumes and numbers of particles are constant for both, and the overall energy of the universe is conserved. he degeneracy of the system obeys the equation ­ = AE ...

Calculate the pressure in bar that would be equivalent to

Calculate the pressure in bar that would be equivalent to the attractive force between the Na + and Cl - ions in a salt crystal, at a separation of 2.81 Å and approximating the area over which the force works to be 4.00A ...

A mixture of 210 x 10-3 g of o2 388 x 10-3 mol of n2 and

A mixture of 2.10 X 10 -3 g of O2 3.88 X 10-3 mol of N 2 . And 5.25 X 10 -3 molecules of CO are placed into a vessel of volume 5.25 L at 12.5°C. a. Calculate the total pressure in the vessel. b. Calculate the mole fracti ...

A steel bar of 100mm length tapers from 12mmtimes10mmfrom

A steel bar of 100mm length tapers from 12mm×10mmfrom one end to 30mm×20mm at the other. If the stress in the bar is not to exceed 100mpa,find the magnitude of the axial force. Also find the change in its length. Take E ...

The shear-force diagram for a beam is shown assuming that

The shear-force diagram for a beam is shown. Assuming that only forces (not applied moments) act on the beam, determine the beam's loading and draw the bending moment diagram

1 a beaker has the shape of a circular cone of diameter 7

1. A beaker has the shape of a circular cone of diameter 7 in and height 9 in. When empty, it weighs 14 oz; full of liquid, it weighs 70 oz. Find the density of the liquid in both SI and U.S. customary units. 2. Some exp ...

A bar consists of two portions bc and c d of the same

A bar consists of two portions BC and C D of the same material and of the same length L, but of different cross sections. Determine the strain energy of the bar when it is subjected to an axial load P, expressing the res ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro