Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Computer Engineering Expert

Engineering


Home >> Computer Engineering

Why IO devices cannot be connected directly to the system bus?

Ans: The IO devices can't be directly connected to the system bus because the following reason

A) The data transfer rate of IO devices is slower that of CPU.

B) The IO devices in computer system has different data formats and work lengths that of CPU. So it is essential to use a module between system bus and IO device which is called IO module or IO system

Write the factors considered in designing an I/O subsystem?

 Ans:

1. Data transfer: Amount, rate to or from device.

 2. Data Location: Device selection, address of data within device (track, sector etc)

3. Memory or between an I/O device and CPU.

4. Synchronization: Output only when device is ready, input only when

Described Direct Memory Access

Ans: A modest increase in hardware enables an IO device to transfer a block of information to /from memory without CPU intervention. This task needs the IO device to produce memory addresses and transfer data via the bus by using interface controllers.

 

Computer Engineering, Engineering

  • Category:- Computer Engineering
  • Reference No.:- M9511396

Have any Question?


Related Questions in Computer Engineering

Michelle walker is looking to invest in a three-year bond

Michelle Walker is looking to invest in a three-year bond that makes semi-annual coupon payments at a rate of 5.225 percent. If these bonds have a market price of $990.00, what yield to maturity can she expect to earn?  ...

Why do the chemically similar alkali metal chlorides nacl

Why do the chemically similar alkali metal chlorides NaCl and CsCl have different structures, whereas the chemically different NaCl and MnS have the same structure?

Question suppose you are given two stacked s and twrite an

Question : Suppose you are given two stacked S and T. Write an algorithm to transfer all elements from S to T so that the top of S is the first to be inserted onto T, and the bottom of S ends up at the top of T.

What is 4g and its benefits how fast is your internet

What is 4G and its benefits. How fast is your Internet service supposed to be for stationary users?

Explain the differences between working in the web based

Explain the differences between working in the web based version of Outlook in Office 365 to the desktop application version of Outlook.

Question suppose you are given n positive integers to sort

Question : Suppose you are given n positive integers to sort on a special computer which has access to special memory containing p slots. The special memory supports storing a key-value pair (a, b) into the memory in O(1 ...

At a certain temperature the equilibrium constant kc for

At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g) + I2 (g) ------> 2HI(g) Kc = 53.3 At this temperature, 0.700 mol of H2 and 0.700 mol of I2 were placed in a 1.00-L container to rea ...

Question a suppose you do shading calculations in the

Question : a) Suppose you do shading calculations in the vertex shader. What happens to the vertex colors when they go from the vertex shader to the fragmant shader? b) Suppose instead you want to do the shading calculat ...

Reading the biographybook where the body meets memory by

Reading the Biography Book : "Where the Body Meets Memory" by David Mura Questions: When David Mura was growing up, he tried very hard to reject his Japanese heritage. Find examples in Chapter 2 "All American Boy," and t ...

The question is asking how to do it in linuxa scientist ran

The question is asking how to do it in Linux. A scientist ran an experiment that generated data that accumulated in a sequence of files: data1, data2, data3, data4 and data5. He wants to know how many lines of data he ha ...

  • 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

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As

Follow Us

© Copyright 2013-14 mywordsolution.com All rights reserved