What are the logic micro-operations, Computer Engineering

Assignment Help:

Q. What are the Logic Micro-operations?

Logic operations are fundamentally binary operations that are performed on string of bits stored in the registers. For a logic micro-operation every bit of a register is treated as a variable.

A logic micro-operation:

R1 ← R1.R2 specifies AND operation to be performed on contents of R1 and R2 in addition store the results in R1. For illustration if R1 and R2 are 8 bits registers and:

R1 comprise 10010011 and

R2 comprise 01010101

    Then R1 will comprise 00010001 after AND operation.

Some of the common logic micro-operations are AND, OR, NOT or Complement, Exclusive OR, NOR and NAND. In many computers only four: AND, OR, XOR (exclusive OR) and complement micro-operations are implemented.

Let's now discuss how these four micro-operations can be employed in implementing some of significant applications of manipulation of bits of a word like changing some bit values or deleting a group of bits. We are presuming that resultof logic micro-operations go back to Register R1 and R2 comprises the second operand.

We will play a trick with manipulations we are performing. Let's select 1010 as 4 bit data for register R1 and 1100 data for register R2. Why? Since if you see bit combinations of R2 and R1 they represent the truth table entries (read from right to left and bottom to top)  00, 01, 10 and 11. So resultant of logical operation on them will signify which logic micro-operation is required to be performed for that data manipulation. The below table gives details on some of these operations:

R1                                                                    1          0          1          0

R2                                                                    1          1          0          0

2130_What are the Logic Micro-operations.png


Related Discussions:- What are the logic micro-operations

What information is stored in a typical TLB table entry, In a simple paging...

In a simple paging system, what information is stored in a typical Look-aside Buffers  TLB table entry? A classical TLB table entry contains page# and frame#, while a logical

What is a thread, What is a thread? A thread otherwise called a lightwe...

What is a thread? A thread otherwise called a lightweight process (LWP) is a basic unit of CPU utilization, it comprises of a thread id, a program counter, a register set and a

How to use multiple source files in php, a. How to use source files in PHP?...

a. How to use source files in PHP? Define with examples. b. What are benefits of PHP sessions? How is a PHP session formed? c. What is XML and explain its utility? Design an

Explain in brief about the broadband, Explain in brief about the broadband ...

Explain in brief about the broadband It isn't just computers which can be linked without wires, different peripheral devices can be linked to a computer system without the need

Briefly explain about ask, Question 1 What is modulation? Explain why i...

Question 1 What is modulation? Explain why is modulation required? 2 Briefly explain about ASK, FSK and PSK 3 Explain about the Nyquist Bandwidth and Nyquist Theorem 4

The interface chip design, This is an embedded system that involves the int...

This is an embedded system that involves the integration of hardware and software design stages. It consists of the user interface (keypads and LCD display) and two Peripheral Inte

Illustrate does gas have density, Q. Illustrate does gas have density? ...

Q. Illustrate does gas have density? Answer:- Gas in addition to everything in the universe has density though some densities are not either too high or too low to be dete

Using aspx view engine, When using aspx view engine, to have a steady look ...

When using aspx view engine, to have a steady look and feel, across all pages of the application, we can build use of asp.net master pages. What is asp.net master pages equal, when

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