CSC 261: Computer Organization and Assembly Language

CSC 261: Computer Organization and Assembly Language

Spring 2024

Assignment 1

____________________________________________________________________________

Question 1: What would be displayed if you output each of the following

sequences of ASCII codes to a computer’s screen?

24 33 38 39 20 34 35

Question 2 (20 points): Find the word-length 2’s complement representation of each of the

following decimal numbers

(a) 33

(b) -54

Question 3 (20 points): Find the byte-length 2’s complement representation of each of the

following decimal numbers

(a) -78

(b) 89

Question 4 (20 points): Each of these 16-bit words can be interpreted as either a 2’s

complement number or an unsigned number. Find the decimal integer that corresponds

to each interpretation.

(a) FF FA

(b) 53 A2

Question 5 (20 points): Each of these bytes can be interpreted as either a 2’s complement

number or an unsigned number. Find the decimal integer that corresponds to each

interpretation.

(a) FF

(b) 53