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 are the types of data warehouses, What are the types of data warehouse...

What are the types of data warehouses? Various types of data warehouses are illustrated below: a) Financial Data Warehouses b) Insurance Data Warehouses c) Human Resou

Describe about the desk top publishing, Desk Top Publishing (DTP) As wo...

Desk Top Publishing (DTP) As word processors develop increasingly more sophisticated features, differences with desk top publishing (DTP) packages becomes more and more blurred

What is the analysis techniques object modelling, What is the Analysis Tech...

What is the Analysis Techniques Object Modelling Object modelling is very significant for any object oriented development, object modelling shows static data structure of real

Explain about micro-instruction formats, Q. Explain about Micro-instruction...

Q. Explain about Micro-instruction Formats? Now let's focus on format of a micro-instruction. The two widely used formats employed for micro-instructions are vertical and horiz

Over fitting considerations, Over fitting Considerations : Hence in le...

Over fitting Considerations : Hence in left unchecked there backpropagation in multi-layer networks can be highly susceptible to overfitting itself to the training examples. B

Prove equations by using the boolean algebraic theorems, Prove the equation...

Prove the equations using the Boolean algebraic theorems that is given below A‾BC + AB‾C + ABC‾+ ABC = AB + BC + AC Ans. The equation given is A‾BC + AB‾C + ABC‾+ ABC = AB + BC +

Term memory as used in a computer context initially, Term memory as used in...

Term memory as used in a computer context initially The term memory as used in a computer context initially referred to magnetic core memory devices which were used beginning

How to call a wml script from a wml page, WML & WML Script 1. How to ca...

WML & WML Script 1. How to call a WML Script from a WML Page? 2. Write a brief note on WML Script Operators and Expressions. 3. Write brief notes on WML Script Statements

What is floppy drives, Q. What is Floppy Drives? Disks used with a flop...

Q. What is Floppy Drives? Disks used with a floppy disk drive are small removable disks fabricated of plastic coated with magnetic recording material. Disk rotates at 360RPM. F

No. of decimal places for output within a write statement, The no of decima...

The no of decimal places for output can be describes within a write statement. This statement is right. Write:/ decimals 2.

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