Ask Question, Ask an Expert


Ask Computer Engineering Expert

Answer all the problems


(a) Convert the following numbers as asked:                   

(i) Decimal 999 to Hexadecimal

(ii) Octal 555 to Hexadecimal

(iii) Hexadecimal AAAA to Decimal

(iv) Hexadecimal AAAA to Octal                   

(b) Suppose that computer represents negative integers in signed 2’s complement notation having the size of 8 bits. You might also suppose that all registers used for integer arithmetic are of 8 bits. Carry out the following operations using this computer (numbers indicated in the operations are decimal numbers). Indicate overflow condition, if any.

(i) Add -38 and -90

(ii) Subtract 90 from 38

(iii) Add 63 and 65

(iv) Subtract -90 from -65                   

(c) A four bit data 0001 is to be sent across communication channel. What must be the parity bits for SEC code, if this data is to be sent correctly across to destination? Indicate where these SEC code bits would be placed in the data + code bit combination which is to be sent. Suppose that data bits which were received were 1 S 0 S 0 S 1 (SEC bits remained unchanged in between wherever they were, that is the value of S might the related SEC bit or Null ). Correct this code using SEC bits generated at the receiver and the SEC bits received from the sources. Demonstrate all the steps of this process.                               

(d) A logical function calculator compares two numbers for the function A >= B. The comparator output 1 of the comparison is TRUE else FALSE. In case if both A and B are equal, the comparator outputs a second bit as 1 (0 otherwise). Partial truth table for comparator is given in Figure :

 Number A       Number B           Output
Bit 1   Bit 0     Bit 1    Bit 0    Same    Zero
0         0          0          0        1          1
0         0          0          1        0          0
...        ...        ...          ...       …         …
0         1         0           0        1         0
0         1         0           1        1         1
...        ...        ...         ...        …         …
1         0         1           1        0          0
1         1         1           1        1          1

Complete the truth table and design and draw the combinational circuit using AND-OR-NOT gates for the description given.       

(e) Why do you require a flip-flop? Describe characteristics table of J K flip flop. How is it different than that of S R flip flop? Describe synchronous counter in the context of change of states of the flip flop.   

(f) What is associative memory? Describe with the help of the diagram. What is a Cache memory? What are its different organisations? Describe Associative cache memory organization with the help of a diagram showing mapping from main memory to cache memory. You should show proper addresses for both the memories in the diagram. Though, for simplicity, you might take size of the main memory as 32 byte and cache as 4 byte.               

(g) You have been asked to design the configuration of a database server (please do not give the names of manufacturer), specifically the RAID configuration for your server. Which of type of RAID machine will you select? Give justification in support of your answer. Also describe the process of interrupt handling when more than one interrupts can occur simultaneously.           

(h) Describe the functions and purposes of Direct Memory Access (DMA) and Input/output processor in Computer. Determine how in Pentium processor I/O devices are connected to the system bus.   


(a) Is it possible to have Instruction set with no operands at all? Justify your answer. Suppose that the machine is to be designed for performing simple arithmetic operations (including unary and binary), what must be optimum number of operand in an instruction set for such machine? Give justification in support of your answer. How does the number of operand addresses in the Instruction Set affect the size of the program on computer?       

(b) A machine is to be designed such that it stores arbitrary length arrays in memory. This machine also supports subroutine calls. Suggest four best addressing modes for the machine. Give reasons for your choice.        

(c) Consider instruction ISNZ Op where Op is a register operand which is the address of the instruction of the executing program. Instruction checks if the value of the preceding instruction execution is NOT ZERO (the result might be in the AC register), if so then it branches to address specified by the Op. prepare sequence of micro-operations which would be needed to execute this instruction. You might use various micro-operation cycles and the essential registers.

(d) Suppose that 8-bit Register R has the data 01101110. Perform the following operations on the register R:     

(i) Selective Set the lower 4 bits to 1100

(ii) Extract the lower 4 bits

(iii) Clear the register using a logical operation

(iv) Insert a value 1111 in the lower 4 bits of the register.       

(e) Represent the following floating point numbers using IEEE 754 floating point single precision format.

i. 32.0125

ii. -0.125       

(f) Describe the working of the control unit of a computer with the help of a Block diagram. Describe significance of micro-instruction in computer. Describe differences between horizontal and vertical microinstructions.     


(a) prepare the advantages of having segments in 8086 micro-processor? Describe the use of stack segment register and process of computations of physical address of the top of the stack in 8086 microprocessor.             

(b) Describe the REPE, CMPS, AAA, and  XLAT instructions of 8086 processor with the help of one ex each.   

(c) Describe any one direct, one register indirect, one based indirect and one indexed indirect addressing modes of 8086 microprocessor with the help of the ex of each.     

(d) Describe process of Input/output using Interrupt 21h in 8086 microprocessor with the help of exs.   

(e) prepare program in 8086 assembly language which finds total of an array of maximum 10 integer elements. You might suppose that array is stored in memory and last value in the array is -2000. The find outd result is stored in location named sum.     

(f) prepare program in 8086 assembly language which passes two input parameters to the subroutine through stack. Subroutine return value 1 if the value of first parameter is greater than the second, otherwise returns 0. Make appropriate assumptions, if any.

Computer Engineering, Engineering

  • Category:- Computer Engineering
  • Reference No.:- M92317

Have any Question? 

Related Questions in Computer Engineering

Al was an attorney in a small town and was very well

Al was an attorney in a small town and was very well respected. A couple retained Al to represent them on the purchase of a home. Before closing, Al informed the couple of payments that they were required to make by chec ...

1 the stream function for an incompressible two-dimensional

1. The stream function for an incompressible, two-dimensional flow field is For this flow field, plot several streamlines for 2. For the case of a source at the origin with a uniform free stream plot the streamline ψ = 0 ...

Pop3 protocol has some optional commands that a

POP3 protocol has some optional commands (that a client/server can implement). Using the information in RFC 1939, find the meaning and the use of the following optional commands: a. UIDL b. TOP 1 15 c. USER d. PASS

A device is sending out data at the rate of 1000 bpsa how

A device is sending out data at the rate of 1000 bps. a. How long does it take to send out 10 bits? b. How long does it take to send out a single character (8 bits)? c. How long does it take to send a file of 100,000 cha ...

1 it is said that unix uses access control lists does the

1. It is said that UNIX uses access control lists. Does the UNIX model include capabilities as well as access control lists? 2. Suppose a user wishes to edit the file xyzzy in a capability-based system. How can he be sur ...

The first few numbers of the lucas sequence which is a

The first few numbers of the Lucas sequence which is a variation on the Fibonacci sequence are: 1  3  4  7  11  18  29 ... Design an algorithm to generate the Lucas sequence.

In a commentary piece on the rising cost of health

In a commentary piece on the rising cost of health insurance ("Healthy, Wealthy, and Wise," Wall Street Journal, May 4, 2004, A20), economists John Cogan, Glenn Hubbard, and Daniel Kessler state, "Each percentage-point r ...

1 when looking at the chronology of the development of the

1) When looking at the chronology of the development of the Internet, which development do you believe to be the most important? Why? 2) In terms of online users, are the genders equally represented? How about for minori ...

1 design and implement a program that compares the use of

1. Design and implement a program that compares the use of linear probing, quadratic probing, and double hashing on a collection of string keys of varying lengths. The program should extract a collection of strings from ...

1 assume that we are going to compute c on both a single

1. Assume that we are going to compute C on both a single core shared memory machine and a 4-core shared-memory machine. Compute the speedup we would expect to obtain on the 4-core machine, ignoring any memory issues. 2. ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen