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

Describe the roles of association, Describe the roles of association No...

Describe the roles of association Note that each association has roles. For instance, in Figure we can see that two classes, Student and University, have their predefined roles

Define the node of object oriented modeling, Define the node of object orie...

Define the node of object oriented modeling A node is a physical element which exists at runtime and represents a computational resource usually having a large memory and often

Functions of an operating system, a) In multitasking Operating Systems, th...

a) In multitasking Operating Systems, there are two types of multitasking such as the "Preemptive Multitasking" and the "Cooperative Multitasking". Describe the two mentioned mult

Can math operations be performed on a void pointer, Can math operations be ...

Can math operations be performed on a void pointer? No. Pointer addition and subtraction are based on advancing the pointer by a number of elements. By explanation, if you have

What is assembly language, What is assembly language? Assembly languag...

What is assembly language? Assembly language : It is a family of low-level language for microprocessors, programming computers, microcontrollers etc. All are implement a symbo

Oo modelling, We might model such a scenario using three types of object: o...

We might model such a scenario using three types of object: one for Customers, one for BankAccounts and another for Transactions. In terms of data required, for Customers assume we

DSP, Assignment of Analog to digital Ssignal Processing

Assignment of Analog to digital Ssignal Processing

Largest and the second largest number, The largest and the second largest n...

The largest and the second largest number from a set of n distinct numbers can be found in    O (n)

Explain program interpretation process, Explain program interpretation pr...

Explain program interpretation process. In a program interpretation process , the interpreter reads the source program and stores this in its memory. This bridges an executi

How can i handle floating-point exceptions gracefully, 'On many systems, yo...

'On many systems, you can describe a function matherr which will be known as when there are certain floating-point errors, like errors in the math routines in .

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