[SOLVED] computer architecture Computer Architecture

Computer Architecture

Tutorial 3 Number Representation and Binary Arithmetic

1) Convert the following binary numbers to decimal:

(a) 0110, (b) 1011, (c) 10101010

2) Convert the following binary numbers to hexadecimal:
(a) 1110, (b) 11011, (c) 1010111101110010

3) Convert the following decimal numbers to binary and hexadecimal:
(a) 12, (b) 27, (c) 96

4) For an 8-bit group, work out the representation for -3710 in

a) Sign & Magnitude
b) Ones Complement
c) Twos Complement
d) Excess-255 (Note: The n in Excess-n does not have to equal 2

m
1,where m is

the number of bits in the bit-group)

e) Excess-128

5) Express 9876510 in Binary Coded Decimal

6) Form the negative equivalent of the following 8-bit Twos Complement numbers

(a) 00011001, (b) 00011110, (c) 01101000, (d) 01110100

by comparing the resulting bit-patterns to the originals, can you spot a short cut

method for the conversion?

7) Perform the following 12-bit twos complement subtraction

1010 1010 1011

1011 0000 1101

8) Perform the binary multiplication 10011 x 1101

9) Divide the binary number 1011111 by 101

For questions 7 9, check the answer by conversion to decimal