CSCI 255 Homework 4

This assignment is due in class or to my office assistant in RH 215 by 9:30 AM on 18 September.

Problem 1

Draw a CMOS implementation of a three-input NAND gate.

Problem 2

Write the truth table that corresponds to the following three-input circuit implemented with CMOS transistors. [Circuit taken from NCSU ECE 109 homework.]
CMOS circuit

Problem 3

A 4 GB memory has a 32-bit word size. How many 32-bit words can be stored in this memory?

Problem 4

A 16 MB memory has a 24-bit word size. How many bits are required to address this memory?

Problem 5

A computer memory consists of 16-bit words stored in 6M locations. What is the size of this memory in bytes?