computer-science-Solutions to Review Questions and Problems
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Course
Computer-science
Institution
Computer-science
Introduction
(Solutions to Review Questions and Problems)
Review Questions
Q1-1. Turing proposed that all kinds of computation could be performed by a special
kind of a machine. He based the model on the actions that people perform
when involved in computation. He abstracted these actions into...
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Table of Contents
Solution Manual for chapter 1 2
Test Bank for chapter 1 4
Introduction
(Solutions to Review Questions and Problems)
Review Questions
Q1-1. Turing proposed that all kinds of computation could be performed by a special
kind of a machine. He based the model on the actions that people perform
when involved in computation. He abstracted these actions into a model for a
computational machine that has really changed the world.
Q1-2. The von Neumann Model defines the components of a computer, which are
memory, the arithmetic logic unit (ALU), the control unit and the input/output
subsystems.
Q1-3. Based on the Turing model a program is a set of instruction that tells the com-
puter what to do.
Q1-4. The von Neumann model states that the program must be stored in the mem-
ory. The memory of modern computers hosts both programs and their corre-
sponding data.
Q1-5. The subsystems of the von Neumann model are memory, the arithmetic/logic
unit (ALU), the control unit, and the input/output.
Q1-6. Memory is the storage area used for programs and data.
Q1-7. The arithmetic/logic unit (ALU) is where calculations and logical operations
take place.
Q1-8. The control unit controls the operations of the memory, ALU, and the input/
output subsystem.
Q1-9. The input subsystem accepts input data and the program from outside the
computer; the output subsystem sends the result of the processing to the out-
side.
Q1-10. The first generation (roughly 1950–1959) is characterized by the emergence
of commercial computers and were used only by professionals. The second-
generation (roughly 1959–1965) computers used transistors instead of vac-
uum tubes. The third generation (roughly 1965 and 1975.) started with the
invention of the integrated circuit that reduced the cost and size of computers
even further. The fourth generation (approximately 1975–1985) saw the
appearance of microcomputers. The fifth generation, started in 1985, wit-
nessed the appearance of laptop and palmtop computers, improvements in sec-
1
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