A computer is an electronic device that manipulates information or "data." It has the ability to store, retrieve, andprocess data. You can use a computer to type documents, send email, and surf the Internet. You can also use it to handle spreadsheets, accounting, database management, presentations, games, and more. Whether you realize it or not, computers play an important role in our lives. When you withdraw cash from an ATM, scan groceries at the store, or use a calculator, you're using a type of computer.
What is an Operating System?
An operating system is the most important software that runs on a computer. You might be thinking, “OK, but what is software?” Software is any set of instructions that performs some task on a computer. The operating system performsmany essential tasks for your computer. It controls the memory needed for computer processes, manages disk space, controls peripheral devices, and allows you to communicate with the computer without knowing exactly how a computer works. Without an operating system, a computer is useless.
What are the Basic Parts of a Desktop Computer?
All of the basic parts of a desktop computer are considered hardware. The computer case, monitor, keyboard,mouse, and power cord are considered the basic parts. These items are the things you notice right away when you look at a desktop computer. Beyond these parts are the hardware items that are located inside the computer case and the peripherals, which are optional pieces of hardware that make the computer system more useful, or enable you to accomplish additional tasks. Let's take a look at the basic hardware components, or the things required in order to let you and the computer interact.
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