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Hardwara
Hardware is the physical, tangible components of a computer system. This includes the central processing unit (CPU), the system memory, the motherboard, the hard drive, the graphics card, the sound card, and all the other pieces that make up the computer.
Hardware can be divided into two categories: internal and external. Internal hardware is the hardware that is inside the computer case, while external hardware is the hardware that is connected to the computer through ports on the back or sides of the case.
Internal hardware can be further divided into four categories: the CPU, the motherboard, the system memory, and the hard drive.
The CPU, or central processing unit, is the brains of the computer. It is responsible for executing the instructions that make up the software. The CPU is a single chip that contains the cores, or processing units, that do the actual work.
The motherboard is the main circuit board in the computer. It is responsible for connecting all the different parts of the computer together and providing the connections for things like the CPU, the system memory, the graphics card, and the sound card.
The system memory, also known as random access memory (RAM), is where the computer stores the data and the instructions that are being executed. The more RAM you have, the more things you can do at the same time.
The hard drive is where the computer stores its data. The hard drive is a physical disk that stores the data on spinning disks, or platters. Hard drives come in a variety of sizes, from a few gigabytes up to several terabytes.
External hardware can be divided into four categories: the monitor, the keyboard, the mouse, and the ports.
The monitor is the screen where the computer displays its output. The size of the monitor depends on the size of the computer case and the graphics card.
The keyboard is the device that you use to type in information. It typically has a number of buttons, as well as a set of arrow keys and a set of function keys.
The mouse is the device that you use to control the cursor on the screen. It has a number of buttons and a scroll wheel.
The ports are the connectors on the back or sides of the computer case that allow you to connect external devices like the monitor, the keyboard, the mouse, the printer, and the scanner.
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