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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

How many characters is one byte?

Long long time ago a character was only one byte. Now (unicode) a character is 2 or 4 bytes, but usually we use a variable-length encoding called utf-8.

What is the function of a computer speaker?

To understand how a computer speaker works, you must first learn how sound works. It is a vibration that can travel through air, liquid or a gas. Contrary to science fiction, sound can not be heard in space because it is a vacuum, where there is no air. The sound vibrates through the air and hits your eardrum, which your brain turns into noise.

Parts of a Computer Speaker
  • Most speakers contain the same components. A computer speaker is not much different. A detached speaker contains a diaphragm, dust cap, voice coil, magnet, spider, basket, connecting wires and suspension (surround). Attached speakers have less components.

How do identify p2 motherboard?

P1 motherboards are "Socket 7", it should be written on the CPU socket. Also, they only have PCI and ISA expansion slots, AGP and PCI-E Video cards slots never appear on a P1 motherboard. The ram slots may be either 72-pin or 168-pin 'Dimm' slots (on desktop motehrboards, laptop boars could have either of these or 144-pin So-Dimm.

How many photos will a 16gb memory card hold?

A lot! Honestly, with some good quality, anywhere from 2,500-10,000

Difference between Ethernet and RS 485?

RS232 is for point to point communication where as RS 485 is for multidpoint communication, Voltage level and speed differ

Hi frnds,,

There are few points which v can discuss on these are

1) Ya first main important point is RS232 is point to point communication n RS485 is multidrope communication which means ...

on RS232 u can not connect more than two device...

RS485 u can connect upto I think max 128 device theorically..(its depends on noise level as well as on distance and burd rate also)

Practicall as max 32...

2)Voltage level of RS232 is

-3 to -25 for 1

+3 to +25V for 0

while RS485 is based on differential voltage (0-5v) diff is 240mV for 1 and -240mV for 0.

3)distance limitation is 100meter for RS232 and 1Km for RS485,

4)noise immunity is high for RS485 as it is balance protocol and differencial protocol..

5)Software point of view u need to set transmit enable line in RS485 rest of the software is same...

6)pin for 232 is (Rx Tx and GND) while in case of RS485 it is (A(+) and B(-)) no need to transmit GND..signal

What special hardware and software is required for a network?

Since you were able to ask that question on the Internet I am assuming you already have access. If you want to hook up a wireless network then you need a router and a wireless network card in your system. The cable that you currently have to get on the internet will go into the router then another cable will come out of the router to the internet. The router will come with software for you to load. It is really not as hard a process as people think. You will set up a password on your wireless internet so only the people you want to get on it will be able to.

How does a heat sink work in the power supply?

A heat sink works on the principle of thermal transfer.

The heat sink transfers heat from the chip to the air, wicking heat away.

The part of the computer that holds the processor?

Is known as the socket. This is embedded in and wired to the motherboard. The socket provides various currents for different parts of the processor and allows the transfer of data to and from the CPU. Different processors use different socket design, as some require different power phases and data pipelines.

What is logical port blocking?

It is a number used in a certain format simply to let network aware applications differ one service to the other. Common syntax is : url:logical port number.

example :

http://one.two.com:80

80 - http service

What are different types of outputs?

The visual output seen on a computer screen. The audio output heard from a computer's speakers.

What is the Purpose of an audio card in a computer?

Some systems still have a dedicated audio card, this is that makes the outputs for sound work.

These days most computers don't have specific specific audio cards, most motherboards (even cheap ones) are sophisticated enough to offer Dolby 5.1 via an optical SPDIF socket. So there's no need for an audio card.

What is the transmission speed of coaxial cable?

from what I've seen, there are many different types of coaxial cables and they all have different transmission rates. From the old days, (90's), TV had a transmission rate of about 768kbits/s, which is now irrelevant because there are cables that can go up to 200Mbits/s (According to what I have gathered here)

How many hard disk can connect system?

It all depends on your motherboard and case. I can have 8 drives in my case, but with my motherboard I can only have 8 SATA connections. So if you want an optical drive you have to sacrifice a HDD. However with HDD's being as cheap as they are you shouldn't need too many.

What is the scope in computer hardware networking?

It varies from computer to computer.. It's sometimes infrared and sometimes iron sight.

What is the software that a computer needs to interpret input from input devices?

Drivers. Drivers is like a middle-ground between software and hardware. It takes input from software and translates them into instructions the hardware can understand.

Firmware is the software that the hardware is already programmed. Firmware is what allows hardware to "think" for itself.

What is a nanobyte?

Theoretically, a nanobyte would be 10 ^(-9) byte (one billionth of a byte). However, a byte consists of 8 bits and a bit cannot be divided, so the minimum we could get is one eighth of a byte. So a nanobyte doesn't really exist.

What does a ide connector do?

An IDE cable connects a hard drive or CD drive to the main board of the computer.

What is a computer that controls access to hardware and software on a network?

It would be a host. All other computers connected to that network are clients.

How to connect 2 monitors to a laptop?

Most laptop computers have a jack somewhere that will allow a standard computer monitor cable to be connected. Sometimes they are hidden behind panels that flip up, slide, or otherwise can be opened. If you have the manual, it will give the exact location of the jack, as well as describing the resolution and color selections possible.

The physical material on which the computer stores data?

If by material you mean chemical element, then silicon is the material. Its a group IV metal on the periodic table and is a semiconductor. It is also the second most abundant material on earth, with roughly 25 percent of the earths crust being some sort of silicon compound, (oxides and such)

Semiconductors' electrical resistance can be controlled by adding impurities from group III and group V elements from the periodic table. This allows precise control of electrical characteristics from which useful devices such as the Transistor (electrical switch) can be made from.

Switches can either be ON or OFF. This is represented in the computer world as 1 or 0. By combining these electrical switches useful information can be stored in terms of 1s and 0s. A 1 or 0 is called a Bit; a string of eight 1s or 0s is called a byte.

Hope this helps...

Why BIOS is being updated?

The basic input/output system (BIOS) on a computer is a simple yet important program on a personal computer (PC) that helps the computer properly boot and run an operating system (OS) during startup. BIOS drivers are typically used in reference to the program itself, and how the program runs and interacts with other devices on the computer. The BIOS drivers on a computer are saved on a small battery located on the motherboard and allow for the proper initialization and startup of a computer when powered on.

What are the disadvantages of standalone computers?

A standalone computer is not able to share resources electronically and is also harder to attack (must be done physically). So if you don't need to share information with anyone and are concerned about electronic attack, use a standalone computer.