Case x and z difference which is preferable and why, Computer Engineering

Assignment Help:

Case x, z difference, which is preferable, why?

CASEZ :

Special version of case statement that uses a Z logic value to signify don't-care bits.

CASEX :

Special version of case statement that uses Z or X logic values to represent don't-care bits.

CASEZ  must be  used  for  case  statements  with  wildcard  don't  cares,  or else  use  of  CASE  is required; CASEX must never be used.

This is because:

Don't cares aren't allowed in the "case" statement. Hence casex or casez are required. Casex would automatically match any x or z with anything in the case statement. Casez would only match z's --x's require an absolute match.

Case

case Complete bitwise match between expression and case item expression casez enables for z values to be treated as don't cares.

casex allows for both x and z to be treated as don't cares.

 

2434_casex,y.png


Related Discussions:- Case x and z difference which is preferable and why

What is called when a star connected intermediate exchange, A star connecte...

A star connected intermediate exchange is known as a? A star connected intermediate exchange is termed as a Hub exchange.

Example on public divisor, Q. Example on PUBLIC DIVISOR? Linker appends...

Q. Example on PUBLIC DIVISOR? Linker appends all segments having the same name and PUBLIC directive with segment name into one segment. Their contents are pulled together in co

Discuss the process of data mining, Discuss the process of data mining? ...

Discuss the process of data mining? The process of data mining having of three stages: (1)The initial exploration (2) Model building or pattern identification with validat

Networking, Nyquist''s sampling theorem says "if you have a signal that is ...

Nyquist''s sampling theorem says "if you have a signal that is perfectly band limited to a bandwidth of f0 then you can collect all the information there is in that signal by sampl

Determine the primary memory of the server, Determine the primary memory of...

Determine the primary memory of the server The keys used for accessing the server are held at a secret location in the primary memory of the server. This area or location is hi

Calculate switching capacity in a two stage network, In a two stage network...

In a two stage network there are 512 inlets and outlets, r=s=24. If the probability that a given inlet is active is 0.8, calculate: Switching capacity Given: N =M =512, α

C, write a code to decode the string"i need 1000 bucks"

write a code to decode the string"i need 1000 bucks"

Memory-to-memory architecture:, Memory-to-Memory Architecture : The pipe...

Memory-to-Memory Architecture : The pipelines can access vector operands, intermediate and final results directly in the main memory. This needs the higher memory bandwidth. How

Forward checking - artificial intelligence, Forward checking: Whether ...

Forward checking: Whether to add some sophistication to the search method there constraint solvers use a technique called as forward checking. So here the general idea is to w

What do you mean by removable drives, A disk drive with removable disks is ...

A disk drive with removable disks is known as removable drive. A removable disk can be replaced by other similar disk on same or different computer so providing huge data storage w

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