- Reset (computing)
In a computer or data transmission system, to reset means to clear any pending errors or events and bring a system to normal condition or initial state usually in a controlled manner. It is usually done in response to an error condition when it is impossible or undesirable for a processing activity to proceed and all error recovery mechanisms fail. A computer storage program would normally perform a "reset" if a command times out and error recovery schemes like retry or abort also fail.
Most of the computers have the "reset" bus that brings the device into the startup state and is active for a short time after powering on. Reset is less dangerous for the hardware than power cycling as the power is not removed. Many computers, especially older models, have the user accessible "reset" button. Out-of-band management also frequently provides the possibility to reset the remote system.
Many memory-capable digital circuits (flip-flops, registers, counters and so on) accept the reset signal that sets them to the pre-determined state. This signal is often applied after powering on but may also be applied under other circumstances.
The ability for an electronic device to be able to reset itself in case of error or abnormal power loss is an important aspect of embedded system design and programming. This ability can be observed with everyday electronics such as a television, audio equipment or the electronics of a car, which are able to function as intended again even after having lost power suddenly. A sudden and strange error with a device might sometimes be fixed by removing and restoring power, making the device reset. Some devices, such as portable media players, very often have a dedicated reset button as they are prone to freezing or locking up. The lack of a proper reset ability could otherwise possibly render the device useless after a power loss or malfunction.
A soft reset is performed by restarting system software without resetting the hardware.
Similar commands include:
stty sane setterm -reset
Wikimedia Foundation. 2010.
Look at other dictionaries:
Reset — may refer to:*Reset (computing), to clear any pending errors or events and bring a system to normal condition or initial state *Reset (finance), a generic concept in the financial markets, meaning the determination and recording of a reference… … Wikipedia
Reset vector — is a computing term used to describe the default location a central processing unit will go to find the first instruction it will execute after a reset. That is to say, the reset vector is a pointer or address where the CPU should always begin as … Wikipedia
Reset (finance) — Reset also known as fixing is a generic concept in the financial markets, meaning the determination and recording of a reference rate, usually in order to calculate the settlement value of a periodic payment schedule between two parties.Resets… … Wikipedia
Category:Computing terminology — From Technical terminology: Technical terminology is the specialized vocabulary of a field. These terms have specific definitions within the field, which is not necessarily the same as their meaning in common use. Jargon is similar, but more… … Wikipedia
Hang (computing) — This article is about the computer malfunction called hanging. For the capital punishment, see hanging In computing, a hang or freeze occurs when either a single computer program or the whole system becomes unresponsive to keyboard and mouse… … Wikipedia
Factory reset — A factory reset or master reset is a full restore of an electronic device to its factory settings. Such electronic devices include handheld computers such as PDAs and cellular phones. It entails deleting all information stored in the device. This … Wikipedia
List of computing topics — Originally, the word computing was synonymous with counting and calculating, and the science and technology of mathematical calculations. Today, computing means using computers and other computing machines. It includes their operation and usage,… … Wikipedia
Kernel (computing) — A kernel connects the application software to the hardware of a computer In computing, the kernel is the main component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware… … Wikipedia
Mouse (computing) — A computer mouse with the most common standard features: two buttons and a scroll wheel, which can also act as a third button In computing, a mouse is a pointing device that functions by detecting two dimensional motion relative to its supporting … Wikipedia
Embedded Computing — Der Ausdruck eingebettetes System (auch engl. embedded system) bezeichnet einen elektronischen Rechner oder auch Computer, der in einen technischen Kontext eingebunden (eingebettet) ist. Dabei hat der Rechner entweder die Aufgabe, das System, in… … Deutsch Wikipedia