Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Implementation of a Simple Arithmetic?
So, by now we have concerned how logic and arithmetic micro-operations can be applied individually. If we combine these 2 circuits along with shifting logic then we may have a possible simple structure of ALU. Basically ALU is a combinational circuit whose inputs are contents of specific registers. ALU performs desired micro-operation as decided by control signals on input and places results in an output or destination register. Whole operation of ALU can be performed in a single clock pulse as it's a combinational circuit. Shift operation can be performed in a separate unit however sometimes it can be made as a part of overall ALU. The following diagram gives a simple structure of one stage of an ALU.
One stage of ALU with shift capability
Please note that in this diagram we have given reference to two previous figures for arithmetic and logic circuits. This phase of ALU has two data inputs; the ith bits of registers to be manipulated. But the (i - 1)th or (i+1)th bit is also fed for case of shift micro-operation of only one register. There are 4 selection lines that determine what micro-operation (arithmetic, logic or shift) on the input. The Fi is resultant bit after desired micro-operation. Let's see how value of Fi changes on the foundation of four select inputs. This is displayed in Figure below:
Please note that in Figure below arithmetic micro-operations have both S3 and S2 bits as zero. Input Ci is significant for only arithmetic micro-operations. For logic micro-operations S3, S2 values are 01. Values 10 and 11 cause shift micro-operations.
For this shift micro-operation S1 and S0 values and Ci values don't play any role.
Figure: Micro-operations performed by a Sample ALU
Q. Determine the use of LOOP instruction? Program: This program prints the alphabets (A-Z) ; Register used: AX, CX, DX CODE SEGMENT ASSUME: CS: CODE. MAINP:
A device which converts BCD to Seven Segment is called ? Ans. DECODER is a device that converts BCD to Seven Segment. This coverts binary words in alphanumeric characters.
Explain Pure and impure interpreters In a pure interpreter, the source program is retained into the source form all throughout its interpretation. These arrangements incur subs
The subsequent step in Karnaugh map is to map truth table in the map. Mapping is done by putting a 1 in respective square belonging to 1 value in truth table. This mapped map is us
what is computer network.
Explain the TEST instruction TEST instruction performs the AND operation. The difference is that AND instruction changes the destination operand whereas TEST instruction doesn
What is the difference between field-group header and other field groups? The header field group is a particular field group for the sort criteria. The system automatically p
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
a) Give eight properties for each of static RAM (SRAM) and DRAM (dynamic RAM) and provide the low-level structure of each type of memory. b) Assume a system with 16 Megabytes o
Discuss the different techniques with which a file can be shared among different users. Several popular techniques with that a file can be shared among various users are: 1
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd