Computer Basic intro

Summary:

This text provides an introduction to computers and their components. It explains that a computer is an electronic device that accepts data, processes it according to instructions, produces output, and stores information. The hardware components of a computer include input devices (such as keyboards and mice), the central processing unit (CPU), primary and secondary memory, output devices (such as monitors and printers), and storage devices (like hard drives and optical disks). The text also discusses different software types, including system and application software. It describes the functions of input, CPU, and output devices. Additionally, it explains the concepts of data, information, and knowledge, as well as the characteristics of computers, such as speed, accuracy, diligence, storage capability, and versatility. The text briefly mentions computer viruses and provides tips for avoiding and minimizing their impact.

Excerpt:

Computer Basic intro

Chapter One
Introduction to Computer

Computer
A computer is an electronic device, operating under the control of instructions stored in its own memory that can accept data (input), process the data according to specified rules, produce information (output) and store the information for future use1.

Functionalities of a computer2.

Any digital computer carries out five functions in gross terms:

Computer Basic Intro

Computer Components
Any kind of computer consists of HARDWARE AND SOFTWARE.

Hardware:
Computer hardware is the collection of physical elements that constitutes a computer system. Computer hardware refers to a computer’s physical parts or components, such as a monitor, mouse, keyboard, computer data storage, hard drive disk (HDD), system unit (graphic cards, sound cards, memory, motherboard and chips), etc. All of which are physical objects that can be touched3.

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Input Devices
The input device is any peripheral (a piece of computer hardware equipment to provide data and control signals to an information processing system such as a computer or other information appliance. Input device Translates data from a form humans understand to one the computer can work with. The most common are keyboard and mouse.