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

What is text editor, What is text editor? It is used for entering and e...

What is text editor? It is used for entering and editing application programs. The user of this program interactively implements command that permit statements of a source prog

What is one-way association, What is one-way association? One-way assoc...

What is one-way association? One-way association means association will traverse in only in one direction and implement using the actual implementation. If the multiplicity is

Explain assembly program execution, Q. Explain Assembly program execution? ...

Q. Explain Assembly program execution? An assembly program is written according to a strict set of rules. A word processor or editor is used for keying an assembly program in t

How authoring packages supports scripting language, How authoring packages ...

How authoring packages supports scripting language Many authoring packages support a scripting language to allow for even more sophisticated applications to be produced. Scrip

Explain the daa instruction, Explain the DAA DAA instruction follows th...

Explain the DAA DAA instruction follows the ADC or ADD instruction to adjust the result into a BCD result. DAA instruction functions only with the AL register, this addition sh

Targeting for new business, Assume you own your own small party supply and ...

Assume you own your own small party supply and rental business. You keep an Excel list of potential customers and clients who have rented or purchased from you in the past 2 years.

What is public key cryptography, What is Public Key Cryptography? Pub...

What is Public Key Cryptography? Public-key cryptography is a type of modern cryptography that allows users to communicate safely without any previously agreeing on a shared

Do you provide storage and destruction services, Do you provide storage and...

Do you provide storage and destruction services? We will assess your storage and destruction needs as part of our evaluation process. Our destruction services can be performed

C++ language, Write a program to find the area under the curve y = f(x) bet...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

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