Computer Architecture Exam - Software Development and Computer Networking, Exams of Computer Architecture and Organization

Download Computer Architecture Exam - Software Development and Computer Networking and more Exams Computer Architecture and Organization in PDF only on Docsity! Cork Institute of Technology Bachelor of Science (Honours) in Software Development and Computer Networking – Stage 1 (NFQ Level 8) Autumn 2006 Computer Architecture (Time: 3 Hours) Answer any five questions. Examiners: Mr. S. Lankford Mr. J. Buckley Dr. A. Kinsella Q1. (a) Convert the Decimal value, 22810, into its corresponding EXCESS-3 code. [2 marks] (b) i. Convert the following from Binary to Octal 1001011012 [2marks] ii. Convert the following from Binary to Hex 10101111010100102 [2 marks] (c) Perform the following arithmetic, using 8 bits and using two’s complement representation: 28 - 18 [4 marks] (d) Determine the Hamming code for the information bits, 10012, using EVEN parity. [5 marks] (e) Assume the following 32-bit floating-point representation: sign bit of mantissa 8 bit exponent in two’s complement 23 bit mantissa Using this format, code the following value in floating point format: i. -22.125 [5 marks] 2 Q2. (a) Draw the circuit and truth table for the following Boolean expression: _ __ ABC + AB [4 marks] (b) Using a K-map, derive the minimal Boolean expression for the following truth table: A B C D Output 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 1 1 1 0 1 0 0 0 0 1 0 1 0 0 1 1 0 1 0 1 1 1 X 1 0 0 0 1 1 0 0 1 X 1 0 1 0 1 1 0 1 1 X 1 1 0 0 X 1 1 0 1 X 1 1 1 0 1 1 1 1 1 X [7 marks] (c) Draw the circuit and truth table for a binary half adder [3 marks] (d) Using black box design, draw the following: i. A Full Adder using Half Adders and any other gates. [3 marks] ii. A 3-bit Carry Ripple Adder using Full Adders. [3 marks]