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 virtual memory, What is virtual memory? Virtual memory is a met...

What is virtual memory? Virtual memory is a method used in some large computer systems that allow the user to construct program as by a large memory space were available, equal

print the sum of the numbers in the file, Make a file which kepts on every...

Make a file which kepts on every line a letter, a space, and a real number.  For example, it may look like this: e 5.4 f 3.3 c 2.2 f 1.1 c 2.2 Write a script that uses textscan to

Determine the binary equivalent of hexadecimal FA, The binary equivalent of...

The binary equivalent of (FA) 16   is ? Ans. (FA) 16 = (11111010) 10

Software interface, what is software interface #Minimum 100 words accepted...

what is software interface #Minimum 100 words accepted#

Define programmed i/o, Define Programmed I/O. It is the result of input...

Define Programmed I/O. It is the result of input and output instructions written in the computer program. Every data item transfer is initiated by an instruction in the program

Explain open-systems interconnections architecture model, Q. Explain Open-s...

Q. Explain Open-systems interconnections architecture model The most common network architecture model is the open-systems interconnections (OSI). Figure shows the ISO (Intern

Data Warehousing Job Scheduling, 1) Define a job scheduling strategy that w...

1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict

Explain in detail about real time processing, Explain in detail about Real ...

Explain in detail about Real time (transaction) processing When booking seats on a flight, for illustration, real time (transaction) processing would be used. Response to a que

Gantt chart and kiviat diagram, Q. What is Gantt chart and Kiviat diagram? ...

Q. What is Gantt chart and Kiviat diagram? Gantt chart: Gantt chart explains numerous activities of every processor with respect to progress in time in busy -overhead - id

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