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

Differentiate between compiler and interpreter, (i) Compiler and Interpret...

(i) Compiler and Interpreter: These are two types of language translators. A compiler changes the source program (user-written program) into an object code (machine language b

Computer architecture by henessy and patterson, what is initial interval an...

what is initial interval and latency in a functional unit(fp) of a pipeline

Ease of learning - user friendliness, Ease of Learning - User Friendliness ...

Ease of Learning - User Friendliness Much has been made recently of increasing sophistication in technology with one of the major benefits advertised as an increase in somethi

Illustration of equivalent exe program, Q. Illustration of equivalent EXE p...

Q. Illustration of equivalent EXE program? An illustration of equivalent EXE program for COM program is: ; ABSTRACT this program adds 2 8-bit numbers in the memory locations

Determine about the intranet server, Determine about the Intranet server ...

Determine about the Intranet server The success or usage of the Intranet server is measured by the number of operations it handles per Unit time. The selection of a good server

Find the de broglie wavelength of electron, Q. Find the de Broglie waveleng...

Q. Find the de Broglie wavelength of electron in the fourth orbit of hydrogen atom. We know that,            λ = 2πr / n λ4 = 2πr 4 / 4  = 2π (4 2 r1) / 4  = 2 X

Let most segment of a name in dns represents, Let most segment of a name in...

Let most segment of a name in DNS represents? Lest Most segment of a name in DNS shows: Individual computer.

What are the measures to be taken in the design, What are the measures or p...

What are the measures or precautions to be taken in the Design when the chip has both analog and digital portions? As today's IC has analog components also inbuilt, some design

Give some examples of malicious data, Give some examples of malicious data....

Give some examples of malicious data.  In May 2002, the Norton Anti-Virus software for Windows operating systems detects about 61000 malicious programs. Some of them are named

How would you kill a process, How would you kill a process? The "kill" ...

How would you kill a process? The "kill" command takes the PID as one argument; this signifies which process to terminate. The PID of a process can be got using "ps" command

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