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Computer Hardware

Computer hardware is a general term used to refer to all the physical parts of a computer. Internal hardware devices include hard drives and motherboards, while external hardware devices include monitors, mice, keyboards, and printers.

11,849 Questions

Is there any danger to powering a 12V 200mA case fan via USB at 5V 500mA max?

If wired correctly, this will not damage the fan or the USB port, as the fan will take less current at a lower voltage.

The main problem with this arrangement is the fan would either not start, or would run very slowly, so probably useless for cooling anything.

If you can get a 5V fan, not more than 500mA, this would be much more effective.

(Note- If wired incorrectly, reverse polarity could damage both USB port and fan, short circuit could damage your USB port.)

Which device can be connected to the computer and recognized while the computer is running?

Any USB Device, or firewire device such as digital cameras, memory sticks, USB mice, USB keyboards etc...

What are the categories of operating system based on the hardware machine they run?

there are two types of os based on your hardware machine. first is nos and second is cos base.

What does overclock mean?

To run a microprocessor faster than the speed for which it has been tested and approved.

What do Power supply symbols mean?

For instance, there is the difference between -direct current- and -alternate current- For example: a simple battery gives direct current, e bicycle-dynamo generates alternate-current, so plus becomes minus and vice versa several times a second. A symbol for direct current can be: ____ - - - A symbol for alternate current is a small sine-wave: ~

Active Directory was first introduced in which operating system?

Active Directory was previewed in 1999, released first with Windows 2000 Server edition

What does Nolan in shredderman rules use to navigate his computer?

Nolan uses a voice-controlled navigation system called ShredSearch to navigate his computer in "Shredderman Rules". This system allows him to control the computer using voice commands, making it easier to search for information and access files quickly.

Why is it unwise to store electronic equipment on a carpet?

i dont get any answere maybe i will try a next site.

Carpets tend to favor the accumulation of static electrical charges: With movement across carpets and low ambient humidity conditions sensitive electonic equipment can be damaged by resulting electostatic discharge.

What is a digital scanner?

A device that will scan a paper into a computer so that it is in digital form.

What is simple disk striping not fault tolerant?

In fault tolerant disk arrays, such as RAID 5, a parity value is calculated for each bit of data at the same place on each disk in the array, and stored separately, so that the contents of any disk in the array can be calculated from the parity value and the contents of the other disks. This allows service to continue at reduced performance after the failure of any disk, and the failed disk can be replaced and the contents re-built without removing the array from service. Mirrored arrays, also known as RAID 1, simply maintain two copies, so that if one fails, the other can continue to serve.

Simple disk striping doesn't attempt to store either a parity bit or a complete copy; it just spreads all data across all disks. This can significantly improve read performance, but if any drive fails, it is impossible to reconstruct the lost data, or continue service.

What is a pen plotter?

A device that draws pictures on paper based on commands from a computer. Plotters differ from printers in that they draw lines using a pen. As a result, they can produce continuous lines, whereas printers can only simulate lines by printing a closely spaced series of dots. Multicolor plotters use different-colored pens to draw different colors. In general, plotters are considerably more expensive than printers. They are used in engineering applications where precision is mandatory.

What are the different types of computers?

Two distinct types of computers are laptops and desktops. There are many other types of computers under these two main categories.
pc dektops laptops plamstop workstation sever main computer mini fram super wearable

What would a 1 Form C relay and a 1 Form A and 1 Form B relay be?

Hi All answered in http://zone.ni.com/devzone/cda/tut/p/id/4782 = Relay Forms = 121 ratings | 4.61 out of 5 | Print DocumentRelays are classified by their number of poles and number of throws. The pole of a relay is the terminal common to every path. Each position that the pole can connect to is called a throw. A relay can be made of n poles and m throws. For example, a single-pole single-throw relay (SPST) has one pole and one throw, as illustrated in the following figure. A single-pole double-throw (SPDT) relay has one pole and two throws, as illustrated in the following figure: A double-pole double-throw (DPDT) relay has two poles, each with two simultaneously controlled throws, as illustrated in the following figure: Relays are then classified into forms. Relay forms are categorized by the number of poles and throws as well as the default position of the relay. Three common relay forms are: A, B, and C. Form A Form A relays are SPST with a default state of normally open. Form B Form B relays are SPST with a default state of normally closed. Form C Form C relays are SPDT and break the connection with one throw before making contact with the other (break-before-make).

Five generation of computer display in table format?

First Generation:

1942-1955

Vacuum Tubes or Valves

Ø used vacuum tubes as electronic circuit

Ø magnetic drum for primary storage

Ø mercury delay lined for memory

Ø punch-card used as secondary storage

Ø machine level programming used

Ø operating speed was used in terms of millisecond

Mark-I, UNIVAC,

ENIAC

etc.

Second Generation:

1955-1964

Transistor

Ø magnet core memory used as internal storage

Ø magnet tapes used as secondary storage

Ø little bit faster I/O devices

Ø high level language used as programming

Ø processing speed measured in microsecond

IMB 1401,

ICL 2950/10

etc.

Third Generation:

1964-1975

IC(Integrated circuits)

Ø semi conductor memory used as primary storage

Ø magnetic discs were used as secondary storage

Ø massive use of high level language

Ø processing speed increased to nanosecond and even faster

IBM 360 series,

UNIVAC 9000

etc.

Fourth Generation:

1975-1990

VLSI or Microprocessor

Ø massive use of magnetic and optical storage devices with capacity more than 100 GB

Ø advancement in software and high level language

Ø use of 4th generation language(4GL)

Ø operation speed increased beyond picoseconds and MIPS (Millions of Instructions Per Second)

IBM PC,

Pentium PC,

Apple/Macintosh

etc.

Fifth Generation:

1990+

Bio-Chips

Ø AI will make computer Intelligent and knowledge based

Ø very high speed, PROLOG (programming language)

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What is it called when a computer is turned on and the operating system is being loaded?

Booting up ..!

A boot process is a step by step process with which a computer loads the operating system.

How do I determine the power supply for a graphics card?

nvidia has info about selecting a power supply based on a PC and Graphics card setup. Obviously the best choice is to go to the manufacturers web site to find out how many Amps a particular card uses.