Introduction to Programming

Introduction to Programming

Computer Programming 1 - Web Development

1. ​What is a computer program?

2. What is programming?

3. What are the low-level languages?

4. What are the high-level languages?

5. What is algorithm?

Introduction

Computer Programming 1 - Introduction to Programming

Computer Program

Computer Programming 1 - Introduction to Programming

It is a sequence of statements intended to accomplish a task. It is a set of instructions for a computer to follow.

What are the 3 computer programs?

Computer Programming 1 - Introduction to Programming

​System software - Windows  10, IOS

Application software   - Browsers (Chrome, Edge, etc..), Office Suite Programming Language Software – Java, PHP, C, C++, SQL

What is Programming?

​Programming

Is the process of creating a set of instructions that tell a computer how to perform a task. Programming can be done using a variety of computer programming languages, such as JavaScript, Python, and C++.

Computer Programming 1 - Introduction to Programming

​These are the languages that deal with a computer’s hardware

components. There are two (2) common low-level languages: machine language and assembly language.

Low-level language

• It is the language that the computer can directly understand. It is the most basic set of instructions that the computer can execute.

• Machine language programs are written into binary codes (0,1).

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​Computer Programming 1 - Introduction to Programming

​Machine Language

• It is a symbolic form of machine language that is easier for people to read, such as ADD AX DX. This makes use of instructions in mnemonic form.

​Assembly Language

​These are the programming languages that use natural languages, such as the English Language. A high-level language has its own syntax.​

High-level Languages

rules of the language, for example, print or write is used to produce and output.​

​Computer Programming 1 - Introduction to Programming

​What is syntax?

• these are program statements that carry out tasks that the program has to perform, for example, print this word or add these two (2)numbers.

​Computer Programming 1 - Introduction to Programming

Commands in High-level Languages

errors that occur when the syntax of the program is correct but the expected output is not.

​Logical Errors in

high-level languages

Programming Cycle: What is Algorithm?

It is a problem-solving technique used in solving programming problems. It is a step-by-step problem-solving process in which a solution is arrived at in a finite amount of time.

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​​The problem-solving process in the programming environment involves the following steps:

1. Problem Analysis: Analyze the problem and outline the problem and its solution requirements.

2. Algorithm Design: Design an algorithm in a programming language.

3. Coding: implement the algorithm in a programming language.

4. Execution: Verify that the algorithm works.

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Programming Cycle

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