Introduction to computer science

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This document provides an introduction to computer science and programming. It discusses how programming involves designing algorithms to solve problems by writing instructions in programming languages. It describes how machine languages correspond directly to hardware operations, while assembly language uses words. High-level languages allow solving complex problems quickly and relate to human thinking. Interpreters translate and execute statements one by one, while compilers translate the entire program at once. Examples of programming languages include Java, Python, C++, C, Pascal, COBOL, and FORTRAN. Good programming practices make code understandable, reduce errors, and speed development.

INTRODUCTION TOCOMPUTER SCIENCE
CSC 1302
LECTURE 4
Department of Maths and Computer-
Science
Faculty of Natural and Applied Science
BY
UMAR DANJUMA MAIWADA

PROGRAMMING
 Programming is all about designing and coding
algorithm for solving problems.
 Computers are not very intelligent, the instruction they
receive must be extraordinary special.
 We write computer instructions in programming
languages, which are more constrained and exact than
human languages are.
 It must follow a series of algorithm.
2

MACHINE LANGUAGES
 Instructions written in these language
correspond directly to the hardware
operations of a particular machine.
 It deals directly with the computers physical
component.
 They are represented in binary.
3

ASSEMBLY LANGUAGE
 It allows the use of words rather than binary
number.
 The words corresponds to operations performed by
the computers physical components.
4

HIGH LEVEL LANGUAGE
 It is use to solve complex problems which is quick
and reliable and it relates to the way human thinks.
 It provides natural frame work through which problem
is solved.
 It include abstraction
5

INTERPRETERS AND COMPILERS
 The interpretation approach relies on a program
known as an interpreter to translate and execute
the statement in high level language program.
 Interpreter reads the statement one at a time,
translating and executing each statement before
processing the next one.
 Compilation approach relies on a program known
as a compiler to translate the entire high level
language program into its equivalent machine
language instructions.
6

THE DIFFERENCE BETWEEN COMPILER AND
INTERPRETER
 Compilation is more faster than translation because
compilation is done once and for all, the interpreter
and the source code are needed every time the
program runs
 Compilation is a one shot translation, once a
program is compiled, it may be run over and over
again without further need for the compiler or the
source code.
7

EXAMPLE OF PROGRAMMING LANGUAGES
 JAVA
 Python
 C++
 C
 Pascal
 COBOL (common business oriented language)
 FORTRAN (formula translator)

Good programming practices
•Your code may be used by somebody else
•The code may be long
•Should be easy to understand for you and for others
•Saves lot of errors and makes debugging easier
•Speeds up program development
9

QUESTIONS???
THANK YOU FOR YOUR ATTENTION
10

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This document provides an overview of spreadsheet software and Microsoft Excel. It discusses what a spreadsheet is and examples like Microsoft Excel and Lotus 123. It then describes the components of an Excel spreadsheet like workbooks and worksheets. The document proceeds to explain how to open Excel, describes the interface elements, and covers how to open and create workbooks and worksheets. It also summarizes how to enter, edit, and save data, insert and delete cells, create formulas, and make charts in Excel.

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This document provides an overview of using Microsoft Word to create and format documents. It discusses starting Word, creating new documents, and saving documents. Key Word features covered include copying and pasting text, formatting text using fonts and styles, inserting tables and images, and printing documents. The document is intended as an introductory lecture on using Word's basic functions to manipulate textual information in documents.

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Introduction to computer science

1. INTRODUCTION TOCOMPUTER SCIENCE CSC 1302 LECTURE 4 Department of Maths and Computer- Science Faculty of Natural and Applied Science BY UMAR DANJUMA MAIWADA

2. PROGRAMMING  Programming is all about designing and coding algorithm for solving problems.  Computers are not very intelligent, the instruction they receive must be extraordinary special.  We write computer instructions in programming languages, which are more constrained and exact than human languages are.  It must follow a series of algorithm. 2

3. MACHINE LANGUAGES  Instructions written in these language correspond directly to the hardware operations of a particular machine.  It deals directly with the computers physical component.  They are represented in binary. 3

4. ASSEMBLY LANGUAGE  It allows the use of words rather than binary number.  The words corresponds to operations performed by the computers physical components. 4

5. HIGH LEVEL LANGUAGE  It is use to solve complex problems which is quick and reliable and it relates to the way human thinks.  It provides natural frame work through which problem is solved.  It include abstraction 5

6. INTERPRETERS AND COMPILERS  The interpretation approach relies on a program known as an interpreter to translate and execute the statement in high level language program.  Interpreter reads the statement one at a time, translating and executing each statement before processing the next one.  Compilation approach relies on a program known as a compiler to translate the entire high level language program into its equivalent machine language instructions. 6

7. THE DIFFERENCE BETWEEN COMPILER AND INTERPRETER  Compilation is more faster than translation because compilation is done once and for all, the interpreter and the source code are needed every time the program runs  Compilation is a one shot translation, once a program is compiled, it may be run over and over again without further need for the compiler or the source code. 7

8. EXAMPLE OF PROGRAMMING LANGUAGES  JAVA  Python  C++  C  Pascal  COBOL (common business oriented language)  FORTRAN (formula translator)

9. Good programming practices •Your code may be used by somebody else •The code may be long •Should be easy to understand for you and for others •Saves lot of errors and makes debugging easier •Speeds up program development 9

10. QUESTIONS??? THANK YOU FOR YOUR ATTENTION 10

Editor's Notes

#6: Scalability of handover framework to handle increased handovers without compromising latency performance Flexibility to support various 4G deployments

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