Introduction to computer science dessalegn Mequanint Yehuala Foreword

Introduction To Computer Science
16
Unit 0: Pre-Assessment
Before discussing the various topics that relate to the development of history of computers,
the Von Neumann architecture and other related topics in subsequent units, in this unit,
basic terms that relate to computer science have been described. Understanding the terms
associated to computer science, information technology and information and communication
technology in general develop your understanding of key concepts which have been discussed
in the module.
Unit Goals
This unit is to remind learners some of the important components of a computer system and
computing, which learners are assumed to have known. Upon completion of this unit the
learner should be able to:
• distinguish terminologies that relate to computer science, information technology
and Information and Communication Technologies; and
• Compute or convert the binary equivalent of decimal numbers.

Key Terms
Binary Digit: a single digit number in base-2,
in other words, either a 1 or a zero. It is the
smallest unit by which a computer data is
represented.
Browser: a software that is used to access
various kinds of Internet resources.
Byte: a set of Bits that represent a single
character.

---

---

Unit 0: Pre-Assessment
17
What is a Computer, Computer Science, Information Technology and Information and
Communication Technology?
1 What is a Computer?
A computer is defined as an electronic device designed for storing and processing data,
typically in binary form [2].
The following are components of a computer system is composed of:
a.
Memory or Primary Memory: enables a computer to store data or information
and programs temporarily.
b.