Introduction - Java Software Solutions: Foundations of Program Design - page 52

Exercises
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EX 1.1

Describe the hardware components of your personal computer or
of a computer in a lab to which you have access. Include the pro-
cessor type and speed, storage capacities of main and secondary
memory, and types of I/O devices. Explain how you determined
your answers.

EX 1.2 Why do we use the binary number system to store information

on a computer?

EX 1.3 How many unique items can be represented with each of the fol-

lowing?
a. 1 bit
b. 3 bits
c. 6 bits
d. 8 bits
e. 10 bits
f. 16 bits

EX 1.4 If a picture is made up of 128 possible colors, how many bits

would be needed to store each pixel of the picture? Why?

EX 1.5 If a language uses 240 unique letters and symbols, how many bits

would be needed to store each character of a document? Why?

EX 1.6 How many bits are there in each of the following? How many

bytes are there in each?
a. 12 KB
b. 5 MB
c. 3 GB
d. 2 TB

EX 1.7 Explain the difference between random access memory (RAM)

and read-only memory (ROM).

EX 1.8 A disk is a random-access device but it is not RAM (random

access memory). Explain.

EX 1.9 Determine how your computer, or a computer in a lab to which

you have access, is connected to others across a network. Is it
linked to the Internet? Draw a diagram to show the basic
connections in your environment.