Computer, computer essay, computer article, Computer Science, Computer Utilities, Global world.

 

Computer utilities

The tremendous development of computer technology has shocked the whole world and in the last few years there has been a dramatic increase in the use of computers all over the world as well as in Pakistan. The computer has revolutionized our daily lives. It has had a profound effect not only on individual life but also on society as a whole. The world has truly become a global village. Advances in computer and information technology are essential for developing countries to catch up with developed countries. Nowadays, it has become essential for everyone to know how to use a computer.

The use of computers in various walks of life is also increasing in Pakistan and there is a growing trend in various private and government institutions to perform various tasks through computers and internet. It is very difficult for an ordinary person to perform various tasks due to lack of knowledge about computer usage. Keeping these needs in mind, we have written this article on the history of computers, some of the early computers and computer periods so that you can introduce people to computers and you can benefit from a computer-like machine over time.

Computer

The word computer is derived from the English word compute which means "to solve". A computer is an electronic machine that processes data quickly. The computer calculates millions of calculations in one second. It takes data as input and processes it to provide information in the form of output.

Computer history

The history of computers began 5,000 years ago with the invention of the abacus. It was invented in 600 BC. This is a wooden rack () with wires in the horizontal direction. These wires contain grains. This instrument was used to perform simple arithmetic operations by moving the grains on the wires from left to right.

Types of computers

Analog computer

Analog computers display data in the form of graphs or waves on a particular scale. Voltage, pressure, speed and temperature are physical measurements that can be easily measured by analog computers. Their output is displayed on a meter or graph. They use mechanical or electronic methods to represent one type of physical quantity in another.

Digital computer

Digital computers process data in digital form through digital circuits. These computers operate on the basis of all arithmetic and logical factors. In these computers, everything is shown in two forms, i.e. on or off. The digit of one (1) represents on while the digit of zero (0) represents off. This computer displays all results digitally. They can store the results in digital form. In a digital computer, quantities are calculated rather than measured. Digital computers are very fast and can perform various arithmetic and logical tasks with great accuracy.

Hybrid computer

A hybrid computer is actually a combination of a digital computer and an analog computer. These computers can use data both digitally and analogy. They are used for a specific purpose. Their results are very reliable and the performance is very fast. These computers are used in robotics and medical laboratories. In hospitals, hybrid computers are used to monitor patients' heart rate, temperature, blood pressure and other factors. All patient data is converted to digital format and displayed on different scales.

Computer classification

Computers are available in many different sizes and power. The capabilities of these computers vary. These computers are divided into different categories based on size, speed and price.

Supercomputer

Supercomputers are very powerful and very large in size. Compared to all other computers, these are very modern and more expensive. They have a lot of storage capacity. And they can follow trillions of instructions in one second. They have thousands of processors. They are capable of solving extremely complex scientific problems with lightning speed. Supercomputers are used for weather forecasting. Supercomputers cost millions of dollars, so these computers can only be bought by large corporations and governments. They require a lot of energy to run. An example of a supercomputer is the ASCI supercomputer, which has 8,192 processors and can perform 12 trillion arithmetic operations in one second.

Mainframe computer

Mainframe computer size, power and speed calculations are very large. They are capable of performing many complex tasks for different people at the same time. They are much more powerful than micro and mini computers. Many processors are used in them. Mainframe computers are found in very large institutions, banks, educational institutions and research centers. Airlines use these computers to control the schedule and ticketing system of aircraft.

Mini computers

Mini-computers are smaller and less powerful than mainframe computers. However, they are larger and more powerful than microcomputers. They are used as server computers in network environments. They cost less than mainframe computers. ۔ Mini computers are commonly used in mid-sized organizations that cannot afford mainframe computers. The 3000 HP minicomputer is an example.

Microcomputers or personal computers

Microcomputers are also called personal computers (PCs). These computers are specifically designed for individual use. They are less powerful than mini-computers. IBM introduced the first microcomputer in 1981, called the IBM_PC. Many burning computers were introduced. The following are the different types of microcomputers

Desktop computer

The desktop computer is the most used computer. These computers are small in size and can be easily placed on a table or desk, hence the name desktop computer. It is designed to easily place all its parts on a table or desk۔

Portable computer

A portable computer is a computer that can be easily moved from one place to another. There are two types

Laptop computer

These computers are in the form of small briefcases that can be used on the lap. For this reason, they are called laptop computers. They consume less energy and can be run on batteries.

Types of Laptop Computers

While there are no specific types of laptops, retailers generally give them categories for consumers to help them find one for their needs. Some of the labels you might find at a retailer are:

• Value
• Everyday
• Gaming
• Professional
• Ultraportable or notebook

Handheld computer

The handheld computer easily falls into the hands of the user. It has a small screen and a small keyboard.