Implementation of BUS, Computer Engineering

Assignment Help:

Q. Implementation of BUS

Construction of a bus system for four registers employing 4×1 multiplexers is displayed below. Every register has four bits which are numbered 0 through 3. Every multiplexer has 4 data inputs, numbered 0 through 3 and two control or selection lines which are  C0 and C1. The data inputs of 0th MUX are associated to the respective 0th input of each register to form four lines of the bus. The 0th multiplexer multiplexes the four 0th bits of the registers and in the same way for the three other multiplexers. 

Because the same selection lines C0 and C1 are connected to all multiplexers so they choose the four bits of one register and transfer them in four-line common bus.

 

1517_Implementation of BUS.png

Figure: Implementation of BUS

When C1C0 = 00 the 0th data input of all multiplexers are selected and this causes bus lines to receive content of register A because the outputs of register A are associated to the 0th data inputs of the multiplexers which is then applied to output which forms the bus. In the same way when C1C0 = 01, register B is selected and so on. The subsequent table displays the register which is selected for every of the four possible values of selection lines: 

267_Implementation of BUS1.png

Figure: Bus Line Selection

To create a bus for 8 registers of 16 bits each you would need 16 multiplexers one for every line in the bus. Number of multiplexers required to construct the bus is equal to number of bits in every register. Every multiplexer should have eight data input lines as well as three selection lines (23 = 8) to multiplex one bit in eight registers.


Related Discussions:- Implementation of BUS

Why we use debugger, Q. Why we use Debugger? Debugger is a program whic...

Q. Why we use Debugger? Debugger is a program which allows the user to test as well as debug the object file.  Theuser can use this program to perform subsequent functions.

List out the evaluation order for the expression tree, Draw an expression t...

Draw an expression tree for the string. f + (x+y) *((a+b)/(c-d)). Indicate the register requirement for each node and list out the evaluation order for the expression tree. For

Define the term ''turn-around'', The "turn-around" time of a user job is th...

The "turn-around" time of a user job is the? Ans. Total time taken to execute the job is called "turn around" time.

Explain what is high debugging?, It is helped to recure the bugs. A program...

It is helped to recure the bugs. A program has problem that time this debugging is helped to solve the bugs is simply, this is the method of the recure bugs in the programming lang

What is meant by context switch, What is meant by context switch?  Swit...

What is meant by context switch?  Switching the CPU to another process requires saving the state of the old process and loading the saved state for the new process. This task i

Describe the booch methodology, Object Oriented Analysis and Design 1. ...

Object Oriented Analysis and Design 1. What are the advantages of object-oriented systems? 2. Describe the Booch Methodology. 3. Justify that UML is a language for modeli

How 74147 series ttl can be used as a decimal-to-bcd encoder, Illustrate ho...

Illustrate how 74147 series TTL can be used as a decimal-to-BCD encoder. Ans. Available IC in 74 series is 74147 that is a priority encoder. Such IC has active low inp

Software Engineering, explanation of the difference between syntax and sema...

explanation of the difference between syntax and semantic errors

Initial thought process, Initial thought process: Design a script which...

Initial thought process: Design a script which was simple and user friendly.  Integrate procedures/functions to extract data under the hood.  I focused on giving the user the o

Data structures.., in asingle function declaration what is maximum no of st...

in asingle function declaration what is maximum no of statements that may be recursive calls

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