What is a computer? A computer is an electronic device that manipulates information, or data. It has the ability to store , retrieve , and process data. You may already know that you can use a computer to type documents , send email , play games , and browse the Web . You can also use it to edit or create spreadsheets , presentations , and even videos . Watch the video below to learn about different types of computers. Looking for the old version of this video? You can still view it here . Hardware vs. software Before we talk about different types of computers, let's talk about two things all computers have in common: hardware and software . Hardware is any part of your computer that has a physical structure , such as the keyboard or mouse. It also includes all of the computer's internal parts, which you can see in the image below. Software is any set of i...
Secondary memory, also known as secondary storage or auxiliary memory, refers to storage devices that are used to store data and programs permanently or for the long term. Unlike primary memory (RAM), which is temporary and volatile, secondary memory is non-volatile, meaning it retains data even when the power is turned off. Examples of secondary memory include: - **Hard Disk Drives (HDDs)** - **Solid State Drives (SSDs)** - **Optical Discs** (like CDs and DVDs) - **Flash Drives** - **Magnetic Tapes** Secondary memory is typically used to store large amounts of data, applications, and the operati ng system.
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