Programmed input - output technique for computers, Computer Engineering

Assignment Help:

Q. Programmed input - output technique for computers?

Programmed input/output is a useful I/O technique for computers where hardware costs need to be minimised. Input or output operation in these cases may involve:

a)  Transfer of data from I/O device to processor registers.

b)  Transfer of data from processor registers to memory.

With programmed I/O method responsibility of processor is to constantly check status of I/O device to check whether it's free or it has completed inputting data. So this method is quite time consuming where processor wastes so much time in checking and verifying status of an I/O device. Figure (a) gives an illustration of use of programmed I/O to read in a block of data from a peripheral device into memory.


Related Discussions:- Programmed input - output technique for computers

What is dithering, Q. What is Dithering? CMYK provides only 8 colours (...

Q. What is Dithering? CMYK provides only 8 colours (C, M, Y K, Violet= C + M, Orange= M + Y, Green = C + Y, and colour of paper itself!). What about other colours?  For these t

Define dynamic linking, Define dynamic linking.  Dynamic linking is sam...

Define dynamic linking.  Dynamic linking is same to dynamic loading, rather that loading being postponed unless execution time, linking is postponed. This feature is usually us

Explain can we have constant volatile variable, Const and volatile keywords...

Const and volatile keywords should not be used together due to both are opposite in nature. A variable is declared as "const" means its value is not able to be altered but if i

Explain pure and impure interpreters, Explain Pure and impure interpreters ...

Explain Pure and impure interpreters In a pure interpreter, the source program is retained into the source form all throughout its interpretation. These arrangements incur subs

Explain the optimization of data access paths, Explain the Optimization of ...

Explain the Optimization of data access paths Optimization is a very significant aspect of any design. The designer must do the followings for optimization: i) Add redundan

Explain busy tone in strowger telephony, Explain Busy tone in strowger tele...

Explain Busy tone in strowger telephony. Busy tone pattern is demonstrated in figure. This is a bursty 400 Hz signal with silence era in between. The burst and silence durati

standard console application, Three projects as follows: a. Life  stati...

Three projects as follows: a. Life  static library, code for every needed  function in the Life program. b. LifeGame  .exe application, i.e., a standard console application t

Explain dead code elimination, Explain briefly Dead code Elimination of the...

Explain briefly Dead code Elimination of the commonly used code optimization techniques Dead code Elimination: Code which is unreachable or which does not influence the pr

Signed 1’s complement representation, Q. Signed 1s complement representatio...

Q. Signed 1s complement representation? Another possibility that is also simple is use of signed 1's complement. Signed 1's complement has a principal. Add both numbers includi

Operating systems Hw, Need help in class assignment !! i have only 24 hours...

Need help in class assignment !! i have only 24 hours!!

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd