With the help of computer, it has become very easy to get the news and to have contact with the people on the far off countries
The invention of the computer is one of the most remarkable innovations that have occurred over the last ten decades. The modern world is deemed digital, what most people fail to appreciate however is that the source of life being digital is the computer. Gone are the days when executing stuff was done manually. Today at the click of a button, rocket machines has been launched, ICU life-support is run, instant communication is enabled, to mention but a few.
Computers are defined as programmable machines that have two key features :they respond to a specific set of instruction(given by the human) that have been well defined and they can execute a pre-recorded list of instructions usually referred to as a program. Therefore computers execute what they have been instructed to.
Computers have evolved over the years from the static mainframe computers to the portable modern computers that we use today. Modern computers are both electronic and digital, and consist of the actual machinery such as wires circuits and transistors –these are referred to as hardware, and the data and instructions that are fed into the computer which are collectively referred to as software.
Components of the Computer.
The main components that make up the computers are:
Memory: enables computers to store data and programs.
Mass storage device: this is commonly referred to as the hard disk.
Input devices: such as the computer keyboard and mouse.
Output devices: such as the screen.
CPU: which is the heart of the computer and is responsible for all executions.
Benefits of Computers :
Different sectors have benefited from the use of computers.
i.Computers have been of tremendous advantage to businesses and how the businesses are conducted in their respective sectors. Technological advancements have been so remarkable that those that have not yet incorporated the use of computers and computer systems in their day to day business activities are suffering great disadvantage as compared to their competitors. The business world uses computers for organization, self sufficiency, reducing costs, increasing the speeds of transactions and managing sales.
ii.In the academic world, teaching and learning has shifted from the manual and exhausting modes of learning to the computerized versions. Unlike traditional methods of teaching today lecturers and teachers are using power point presentations to teach. They save the slides on their computers then project them on screens .This is a more efficient mode of teaching as it allows for bigger audiences. Another great advantage is for students who are now using online learning facilities to learn about new stuff as well as research. There is no longer the need to walk miles to the physical libraries because they can access the academic material as well as online libraries from their computers.