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

Characteristics of storage - computer architecture, Characteristics of comp...

Characteristics of computer storage: Storage technologies at all of levels of the storage hierarchy may be distinguished by evaluating particular core characteristics and alon

Full form of ldap, LDAP stands for LDAP- Light weight Directory Access...

LDAP stands for LDAP- Light weight Directory Access Protocol.

How to use data validation function in vba, Data validation is a significan...

Data validation is a significant concept in VBA. Application process and a custom dialog box can be used to accurate input errors. You can assign an application process to the fram

Generic techniques developed - artificial intelligence, Generic Techniques ...

Generic Techniques Developed: In the pursuit of solutions to various problems in the above categories, various individual fundamental techniques have sprung up which have been

Explain 100 line exchange with two-motion line finders, Explain 100 line ex...

Explain 100 line exchange with two-motion line finders. Design: In such design, here are 24 line finders. When any of the 100 subscribers has to find access to any of the 24

Mips assembly language equivalents , MIPS' native assembly code only has tw...

MIPS' native assembly code only has two branch instructions, beq and bne, and only one comparison instruction, slt. Using just these three instructions (along with the ori instruct

Demonstrate arc consistency, Demonstrate Arc consistency: To demonstra...

Demonstrate Arc consistency: To demonstrate the worth of performing an arc-consistency check before starting a serarch for a solution, we'll use an example from Barbara Smith'

Determine about selective set- logic micro operations, Selective set Th...

Selective set The selective-set operation sets to 1 bits in register A where there can corresponding 1's  in  register  B.  It  does  not  affect  bit  positions  which  have

Local variables and global variables in lingo programming, Question: (a...

Question: (a) Differentiate between local variables and global variables in Lingo programming. (b) Using examples differentiate between deleteProp() and deleteAt() function

What is secondary list, What is secondary list? It permits you to enha...

What is secondary list? It permits you to enhance the information presented in the basic list.  The user can, for example, select a line of the basic list for which he require

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