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Remote ServiceLearn Computer Basics:
A storage device stores information. Popular examples of storage devices include a hard drive, a recordable CD drive, a recordable DVD drive and a multicard reader.
An input device allows you to communicate with a computer. You can use input devices to enter information into commands. A keyboard, mouse, scanner microphone and joystick are input devices.
The Central Processing Unit (CPU) is the main chip in a computer The CPU processes instructions performs calculations and manages the flow of information through a computer system The CPU communicates with input, output and storage devices to perform tasks.
An output device allows a computer to communicate with you. A monitor printer and speakers are output devices. These devices display information on a screen create print copies and generate sound.
One terabyte is approximately equal to one trillion characters or an entire library of books.
Even experienced computer users have at best a sketchy idea of how a computer really works. They know how to launch and use applications. They can connect to the Internet, surf the Web, play games, or whatever. Some of the most advanced (and fearless) users are even able to install internal components, such as memory modules or network boards. But few people actually stop to think about how a computer carries out the functions that it is asked to perform. If they did, they would be surprised at how easy it is to understand. Like Mr. Spock on Star Trek, everything in a computer is logical. You dont have to be an engineer or a scientist to learn how things work. And mastering these core principles of computing is worth your while. Once you do, you will become a far more knowledgeable participant in todays information society. If a computer cannot find the data it needs in the L1, L.2 or L3 cache, the computer must get the data from the slower main memory, called RAM. The computer places a copy of the most commonly requested data from RAM in the memory cache. This process constantly updates the memory cache so it always contains the most recent and most often used data. Accessing RAM is usually about half as fast as accessing L3 cache.
Using memory cache is similar to working with documents in your office. When you need information, you look for information in a specific, logical order. Each step along the way takes up more of your valuable time.
A bus is an electronic pathway that carries information between devices in a computer.
Bus width is similar to the number of lanes on a highway. Larger bus widths can transfer more data along the bus at a time. Most types of buses measure the bus width in bits, such as 32 or 64 bits. Some types of buses measure the bus width in the number of lanes, such as 32 lanes.
Bus speed is similar to the speed limit on a highway. The higher the bus speed, the faster data travels along the bus. Bus speed is measured in megahertz (MHz), which is millions of cycles per second, or gigahertz (GHz), which is billions of cycles per second.
An input device allows you to communicate with a computer. You can use input devices to enter information into commands. A keyboard, mouse, scanner microphone and joystick are input devices.
The Central Processing Unit (CPU) is the main chip in a computer The CPU processes instructions performs calculations and manages the flow of information through a computer system The CPU communicates with input, output and storage devices to perform tasks.
An output device allows a computer to communicate with you. A monitor printer and speakers are output devices. These devices display information on a screen create print copies and generate sound.
One terabyte is approximately equal to one trillion characters or an entire library of books.
Even experienced computer users have at best a sketchy idea of how a computer really works. They know how to launch and use applications. They can connect to the Internet, surf the Web, play games, or whatever. Some of the most advanced (and fearless) users are even able to install internal components, such as memory modules or network boards. But few people actually stop to think about how a computer carries out the functions that it is asked to perform. If they did, they would be surprised at how easy it is to understand. Like Mr. Spock on Star Trek, everything in a computer is logical. You dont have to be an engineer or a scientist to learn how things work. And mastering these core principles of computing is worth your while. Once you do, you will become a far more knowledgeable participant in todays information society. If a computer cannot find the data it needs in the L1, L.2 or L3 cache, the computer must get the data from the slower main memory, called RAM. The computer places a copy of the most commonly requested data from RAM in the memory cache. This process constantly updates the memory cache so it always contains the most recent and most often used data. Accessing RAM is usually about half as fast as accessing L3 cache.
Using memory cache is similar to working with documents in your office. When you need information, you look for information in a specific, logical order. Each step along the way takes up more of your valuable time.
A bus is an electronic pathway that carries information between devices in a computer.
Bus width is similar to the number of lanes on a highway. Larger bus widths can transfer more data along the bus at a time. Most types of buses measure the bus width in bits, such as 32 or 64 bits. Some types of buses measure the bus width in the number of lanes, such as 32 lanes.
Bus speed is similar to the speed limit on a highway. The higher the bus speed, the faster data travels along the bus. Bus speed is measured in megahertz (MHz), which is millions of cycles per second, or gigahertz (GHz), which is billions of cycles per second.