An Overview of Computers and Logic: Part 1

Fundamentals of Computer Programming is the name of the class that I am currently taking. Basically is it course that teaches you how to design a program using 'visual representations of programming structures', which means instead of actual writing code for a program you use pictures to demonstrate how the program will work. Pseudocode is also used to represent programs, which is using normal language to represent the logic. I will try to include examples of 'visual representations' and pseudocode along my journey.

The first chapter is an overview of  computers and logic. In this post I will be covering the overview of computers and in the next post in the chapter 1 series I will go over the logic part. (I know that some of the topics in this post are really basic, and some many think " if you don't know this stuff by now, there in no hope for you. But I have just decided to cover the majors topics of my class regardless of the simplicity topic)

There are major parts of any computer system:

• Hardware: equipment or devices
• Software: programs that have instructions for the computer

Writing computer programs allows you to give the computer instructions. The instructions can be for computing numbers or using devices that are part of the computer or for most anything you need to computer to do.

There are four major operations in a computer:

• Input
• Processing
• Output
• Storage

Input devices are things like a keyboard or mouse, the tools that allow you enter data into the computer.
Processing is where the data is worked on; the data can be organized, validated, used to make calculations or any number of tasks.
Output devices are things like printers, monitors and speakers, so you can 'see' the data.
Storage, there are two storage categories: internal and external. Internal storage is located inside the computer, this would be main memory and random access memory (RAM). This memory is lost when you turn off the power to the computer. External storage is generally located outside the computer, these types of storage are hard drives and flash drives. The data on external storage devices are relatively permanent, if power is lost the data remains; in order to remove the data it has to be done manually.

The next post will cover the steps involved in the programming process.