Deitel - Python, How To Program.pdf

pythonhtp1_01.fm Page 31 Monday, December 10, 2001 12:13 PM
Chapter 1 Introduction to Computers, Internet and World Wide Web 31
screen terminal
software timesharing
software reusability top-down, stepwise refinement
stored program translator program
structured programming UNIX
supercomputer workstation
task
SELF-REVIEW EXERCISES
1.1 Fill in the blanks in each of the following statements:
a) The company that popularized the phenomenon of personal computing was .
b) The computer that made personal computing legitimate in business and industry was the
.
c) Computers process data under the control of sets of instructions called computer
.
d) The six key logical units of the computer are the , , ,
, and the .
e) Python can incorporate new
written by any Python developer.
(reusable pieces of software), which can be
f) The three classes of languages discussed in the chapter are
.
, and
g) The programs that translate high-level language programs into machine language are
called .
h) C is widely known as the development language of the operating system.
i) In 2001, the core Python development team moved to Digital Creations, the creators of
—a Web application server written in Python.
j) The Department of Defense developed the Ada language with a capability called
, which allows programmers to specify activities that can proceed in parallel.
1.2 State whether each of the following is true or false. If false, explain why.
a) Hardware refers to the instructions that command computers to perform actions and
make decisions.
b) The re regular-expression module provides pattern-based text manipulation in Python.
c) The ALU provides temporary storage for data that has been entered through the input
unit.
d) Software systems called batches manage the transition between jobs.
e) Assemblers convert high-level language programs to assembly language at computer
speeds.
f) Interpreter programs compile high-level language programs into machine language faster
than compilers.
g) Structured programming is a disciplined approach to writing programs that are clear and
easy to modify.
h) Unlike other programming languages, Python is non-extensible.
i) Objects are reusable software components that model items in the real world.
j) Several Canvas components include Label, Button, Entry, Checkbutton and
Radiobutton.
ANSWERS TO SELF-REVIEW EXERCISES
1.1 a) Apple. b) IBM Personal Computer. c) programs. d) input unit, output unit, memory unit,
arithmetic and logic unit (ALU), central processing unit (CPU), secondary storage unit. e) modules.