Computers & Hardware

A:

Matt Kastner of Coastal Business Supplies Inc. estimates that every milliliter of ink yields about 1 square foot of printing. On a table of print yields of various HP cartridges, the number of pages ranged from 31 to about 40 per milliliter.

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  • Where do deleted history items from a computer go to?

    Q: Where do deleted history items from a computer go to?

    A: Deleted history items from a computer go into the computer's cache, or the Temporary Internet Files folder. Items in the cache may include audio, video, pictures and websites. The cache also contains cookies picked up from various websites, which help load those sites faster in the future; when a person empties the Temporary Internet Files folder, the computer does not dump cookies unless specified to do so.
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  • What is the difference between RAM and ROM?

    Q: What is the difference between RAM and ROM?

    A: The are two major differences between RAM (random access memory) and ROM (read-only memory). The first is that RAM requires a power source to retain its information, whereas ROM can retain its information when its power source is removed. Secondly they differ in the tasks they are used for, with ROM used to store programs and files and stockpile the data needed to run them. Any data created, or needed, by them to perform their allotted task is held in RAM.
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  • What are the different types of media?

    Q: What are the different types of media?

    A: The different types of media can be broken down into two categories: print and broadcast. The Internet is also emerging as a type of media, as more and more people are getting their news from the Internet.
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  • What are strategic information systems?

    Q: What are strategic information systems?

    A: Strategic information systems are the information systems that companies use to help achieve their goals and become more efficient. Businesses use these systems to achieve a competitive advantage on their competitors as they seek to provide a good or service in a way that is better than that of their competition. For example, a strategic information system can be used to provide a product at a lower cost than competing organizations.
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  • What is the standard typing speed?

    Q: What is the standard typing speed?

    A: For a casual typist, the average typing speed is 41 words per minute (WPM) with 92 percent accuracy, according to eLearning Industry. The average is between 50 and 80 WPM for individuals who write for a living.
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  • What is the difference between KB, MB and GB?

    Q: What is the difference between KB, MB and GB?

    A: While all three are units of memory storage on a computer, a kilobyte (KB) is smaller than a megabyte (MB) and a MB is smaller than a gigabyte (GB). There are 1,024 bytes in 1 KB, 1,024 KB in 1 MB and 1,024 MB in 1 GB.
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  • What is the purpose of a word processor?

    Q: What is the purpose of a word processor?

    A: A word processor is a software application that creates, stores and prints documents. Word processors are categorized as application software created to accomplish specific tasks as needed by the user.
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  • What are examples of modern technology?

    Q: What are examples of modern technology?

    A: People are surrounded by examples of modern technology every day, from cellphones to the diagnostic equipment physicians use when patients visit their offices and the software children use both in the classroom and for their homework. Modern technology constantly changes, and for the technology lover, there's always something new to discover.
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  • How is RAM measured?

    Q: How is RAM measured?

    A: RAM, or random access memory, is measured in both size, which is typically in gigabytes, and speed, which is typically in megahertz. Computers take different sizes and types of RAM.
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  • Who invented the first supercomputer?

    Q: Who invented the first supercomputer?

    A: Seymour Cray developed the first transistorized supercomputer for the Control Data Corporation in 1958. He introduced the CDC 6600, the first supercomputer to use functional parallelism, in 1964.
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  • What is the purpose of a motherboard?

    Q: What is the purpose of a motherboard?

    A: A motherboard provides the connection between all other computer parts. Processors are attached directly to the motherboard, and the RAM, peripherals and storage devices are attached as well. Motherboards themselves, however, perform no computation and do not store information.
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  • What are the different types of microcomputers?

    Q: What are the different types of microcomputers?

    A: There are many different types of microcomputers, such as personal computers, tablet computers, smartphones and servers. Any type of computer or device that has a microprocessor chip is a microcomputer.
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  • What does USB stand for in terms of computer hardware?

    Q: What does USB stand for in terms of computer hardware?

    A: USB stands for Universal Serial Bus. It is an interface for connecting peripherals to computers. Keyboards, printers and portable media players are some examples of peripherals.
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  • How does RAM work?

    Q: How does RAM work?

    A: Random Access Memory, or RAM, is used by computers to store and access information using a random order. This resource provides a temporary way for computers to process electronic data, while making computers more responsive and helping operate memory-intensive programs. RAM chips are only capable of storing and accessing information when electrical power is present.
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  • Do laptops emit radiation?

    Q: Do laptops emit radiation?

    A: Laptops and computers emit non-ionizing radiation that is not dangerous to humans. Ionizing radiation, which includes X-rays, gamma rays and a part of the ultraviolet spectrum, is harmful to living organisms. Ionizing radiation carries enough energy that it is able to ionize atoms by freeing electrons from their orbit.
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  • How do I make my laptop wireless enabled?

    Q: How do I make my laptop wireless enabled?

    A: Enable a wireless connection by pushing a hardware button on the device and then activating the computer's wireless software on Microsoft Windows laptops. After the wireless hardware is ready, select a wireless connection from the menu of choices.
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  • What does the refresh button do?

    Q: What does the refresh button do?

    A: The refresh button tells the Internet browser to reload the current website. It requests the entire page again from scratch. While refresh buttons were often necessary in the past, modern websites typically update information without requiring a manual refresh.
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  • When was the first computer invented?

    Q: When was the first computer invented?

    A: Charles Babbage invented the first mechanical computer, called the Difference Engine, in 1821 and completed it in 1832. The Difference Engine could perform simple calculations and compile mathematical tables. Babbage later conceived the Analytical Engine, a device that could perform any calculation, but was unable to construct a prototype during his lifetime.
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  • What are some of the different types of robots?

    Q: What are some of the different types of robots?

    A: The types of robots used on Earth include Cartesian robots, cylindrical, spherical/polar robots, articulated robots and parallel robots. Each robot has a different function, but, typically, they perform the tasks that are too dangerous or boring for people.
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  • What are some examples of computer processing devices?

    Q: What are some examples of computer processing devices?

    A: Examples of computer processing devices include the central processing unit, motherboard and memory of a computer. These devices are responsible for storing and retrieving information.
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  • What is the role of device drivers?

    Q: What is the role of device drivers?

    A: A device driver is a component that a computer���s operating system uses to interact with a hardware device, such as a network adapter or modem. A driver interacts with the device through a communications subsystem to which the hardware connects. The operating system or other computer program calls a function in the driver to execute commands on the device.
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