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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
What are some common errors detected by the CPU?
Fixed point overflow, Floating point overflow, Floating point underflow, etc.
What is the purpose of a jumper?
A jumper is used to complete a circuit on a motherboard or other device and thus signal a certain mode of operation, such as "the BIOS should be in recovery mode" or "this hard drive is the Master device."
What is the difference between digital pen and smart quill?
A digital pen is little more than a stylus with more advanced features. Like a stylus, it is meant to be used with a tablet of some sort, but may also have multiple buttons and a blunt end which can be used as a digital eraser.
The smart quill is a proposed device which can be used as a normal pen, even writing on paper, but can also record the movments and thus writing digitally to be retrieved later on a computer system.
It should be noted that as of 2009, the smart quill has not progressed beyond the conceptual phase and is not commercially available whereas digital pens have been in production by companies like Wacom for years.
The purpose of SmartCP is to allow the modem to resume retrieving or downloading large files should the connection or download become interrupted and or disconnected. Instead of wasting valuable time downloading the portion you have received before the transfer was interrupted, SmartCP transparently continues the download from the last know good point. Anyone who has spent many hours or even days downloading a file only to find that they have been disconnected with only 99% of file received knows the thought of all time in anticipation going to waste makes SmartCP a welcome addition to the modem.
SmartCP History:Prior to SmartCP less than successful attempts were made to solve the 'resume download' problem via software and software protocols. Lack of a proper industry standard meant that many sites, services and software packages were either incompatible with each other or did not support the option at all.
The CPU current-register-set pointer is changed to point to the
set containing the new context,which takes very little time. If the context
is in memory, one of the contexts in a register set must be chosen and be
moved to memory, and the new context must be loaded from memory
into the set. This process takes a little more time than on systems with
one set of registers, depending on how a replacement victim is selected
How do you check bad transitor?
Put your meter on the diode range. C to B should be low one way and high the other. Similarly E to B should be low one way and high the other. C to E should be high both ways. If your meter comes with a Hfe cable connect it to the transistor and check the gain.
What are the examples of input and output devices?
Some common input devices are: a mouse, a keyboard, a microphone, a webcam. Common output devices are: monitor (LCD, LED, and CRT are the most common for computers), speakers, headphones, and printers.
Cad stands for:
Computer
Aided
Design
Cam is used to manufacture products. The term CAD/CAM implies both for designing a product and for controlling
Design manufacturing processes.
Cam stand for:
Computer
Aided
Manufacturing
Are DDR266 and DDR400 memory compatible?
Yes for most practical purposes these are compatible (as long as these are same form factor). If you have a motherboard which supports DDR400. You can install any of the DDR266, DDR333, DDR400 modules. All these memories will work (at the speed of the slowest speed memory).
- Neeraj Sharma
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New products are constantly being released, planned, and developed, so it would be impossible to keep track of all of them.
Definition of: Altair
A microcomputer kit introduced in late 1974 from Micro Instrumentation and Telemetry Systems (MITS). It sold for $400 and used an 8080 microprocessor. In 1975, it was packaged with the Microsoft MBASIC interpreter written by Paul Allen and Bill Gates. Although computer kits were advertised earlier by others, an estimated 10,000 Altairs were sold, making it the first commercially successful microcomputer.
A Transient Voltage Suppressor (Transorb) is a zener diode that is engineered for high power current switching. They function in a similar fashion to FETs but are capable of higher current and voltages than FETs. Some are "bidirectional" consisting of two zeners and allow current flow in two directions unlike a FET or Diode which allow current in one primary direction.
carrier signal- use for the purpose of conveying information.
modulating signal- causes variations in some characteristics of carrier signal.
modulated signal - carrier signal after altration in its characteristics is called modulated signal.
example- if you want to see an object (suppose it is an modulating signal),you need light(light is carrier signal) and when light will reflect on object you will be able to see if (that is modulated signal)
What is the speed of computer?
The speed can be determined in various ways. The clock speed of the processor, the speed of the hard drive, the speed of the bus carrying information from the processor to the memory and the speed of the memory.
dual or quad core processors running at more than 2.5 Ghz is fast
a hard drive that has a spindle speed of 7500 to 10,000 RPMs is fast
1066 or 2000 Mhz of front side bus is fast
800 Mhz or more memory speed is fast
How does a PID controller work?
A PID Controller works by correcting the error between a measured process variable and a desired setpoint by calculating and then outputting a corrective action that can adjust the process accordingly - and rapidly - to keep the error minimal.
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A proportional-integral-derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems. A PID controller attempts to correct the error between a measured process variable and a desired setpoint by calculating and then outputting a corrective action that can adjust the process accordingly and rapidly, to keep the error minimal.
What will happen if the data cable or power cable are not connected or plug properly?
Then the component will not work or will be unreliable.
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What year did the Compaq Presario 850 come out?
I am unable to find much detailed information about this computer. Based on the type of processor and the amount of RAM it supports, I would estimate it came out around 1994 or 1995. Reading the BIOS date of manufacture may help you to narrow the time frame a bit.
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