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 the concept of lock, Q. What is the Concept of Lock? Locks are ...

Q. What is the Concept of Lock? Locks are used for protected access of data in a shared variable system.  There are numerous kinds of locks:  1)  Binary Locks: These locks a

State the term organizational structure, State the term Organizational Stru...

State the term Organizational Structure. A business organization might be structured in many various ways, depending on the environment in that this operates. There are alwa

Quick sort exhibit its worst-case behaviour, In which input data does the a...

In which input data does the algorithm quick sort exhibit its worst-case Behaviour? The Quick Sort method exhibits its worst-case behavior when the input data is " Already Comp

How can we draw a circle with gimp, Ans) The simplest way is to make a new ...

Ans) The simplest way is to make a new selection with Ellipse Select tool and stroke it (Edit -> Stroke Selection...). We welcome patches that add tools to draw geometric primitive

Explain the different types of buses with neat diagram, Explain the differe...

Explain the different types of buses with neat diagram. When a word of data is transferred among units, all the bits are transferred in parallel over a set of lines known as bu

Basic need of search engines, Q. Basic need of Search Engines? Search E...

Q. Basic need of Search Engines? Search Engines are programs which search the web. Web is a big graph with pages being the nodes and hyperlinks being the arcs. Search engines c

What is access latency and rotation speed, Q. What is Access latency and Ro...

Q. What is Access latency and Rotation Speed? Access latency: A disk access basically moves the arm to selected cylinder and waits for rotational latency that may take less t

Area under curve , Write a program to find the area under the curve y = f(x...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Clocked sr flip flop, Clocked SR flip flop A clock pulse is a...

Clocked SR flip flop A clock pulse is a sequence of logic 0, logic 1, and logic 0 occuring on the CLK input. Time t n occurs before the clock pulse and time t n+1

What is the use of object factories, Factory methods that will be used to m...

Factory methods that will be used to make objects just like in a static way.

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