Illustrate control and timing signals, Computer Engineering

Assignment Help:

Q. Illustrate control and timing signals?

The requirement of I/O from different I/O devices by processor is quite unpredictable. In fact it relies on I/O needs of particular programs and generally doesn't follow any pattern. Because the I/O interfaces also shares memory and system bus for data input/output, control and timing are required to coordinate the flow of data to/from external devices from/to processor or memory. For illustration control of the transfer of data from a peripheral device to processor might include subsequent steps:

1. The processor enquires from I/O interface to check status of attached device. Status can be busy, ready or out of order.

2. I/O interface returns device status.

3. If device is operational and ready to transmit then processor requests transfer of data by a command that is a binary signal to I/O interface.

4. I/O interface attains a unit of data (for example 8 or 16 bits) from external device.

5. Data is transferred from I/O interface to processor.


Related Discussions:- Illustrate control and timing signals

Doubly linked list, A doubly linked list is like a linked list except that ...

A doubly linked list is like a linked list except that each node has a pointer both to the next node in the list and to the previous node in the list. There are also pointers to th

Describe the features of electronic banking, Question 1: The Banking Ac...

Question 1: The Banking Act provides for banking services through interactive electronic systems. (a) Describe the features of electronic banking. (b) Show the responsibi

Where can i find my user preferences?, Customized User Preferences offer tr...

Customized User Preferences offer tremendous versatility to your individual Bugzilla experience. Let's plunge into what you can do! The first step is to click the "Edit prefs" link

Explain advantageand disadvantages of a dynamic document, Explain advantage...

Explain advantageand disadvantages of a dynamic document.   The chief advantages of a dynamic document lie in its capability to report current information. For illustratio

Convert the binary number to gray code, Convert the binary number 10110 to ...

Convert the binary number 10110 to Gray code ? Ans. For changing binary number 10110 in its equivalent Gray code the rules are as, the left most bit that is MSB in Gray code is 1

Define a segment index or an internal index, The field that contains a segm...

The field that contains a segment index or an internal index is called ? Ans. Target datum consists of a segment index or an internal index.

Determine about the information centres, Determine about the Information ce...

Determine about the Information centres Airports, supermarkets and any application where information needs to be relayed to customers, gain advantage from having automatic inf

What is strong-typing versus weak-typing, What is strong-typing versus weak...

What is strong-typing versus weak-typing? Which is preferred? Why? Strong type is checking the types of variables as early as possible, usually at compile time. Whereas weak ty

Define von neumann architecture, Von Neumann architecture was first majoran...

Von Neumann architecture was first majoranticipated structure for general-purpose computer. However before consideringmain components of von Neumann architecture let us first elabo

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