What Is a Stop Error?

In computer science, execution termination refers to the execution of a command by a computer to stop the software or to stop the machine from providing certain services and functions. Execution termination can be divided into the following two cases: under human intervention, the machine execution is terminated; when the software or program running in the system meets a certain requirement, the program automatically executes the termination operation.

Execution termination refers to a program or process in a computer system that stops providing certain services and functions; or a failure or error in the computer's running process and the machine stops running. According to the conditions of execution termination, it can be divided into active execution termination, such as using a computer to simulate. When the conditions are met, the system terminates. Active execution termination is set in advance. Passive execution termination refers to an unexpected situation in the machine during operation. , Such as software failure, hardware failure.

Execution termination software failure

Software failure has the following definitions: incorrect steps, processes, or data definitions in computer programs; an undesired or unacceptable internal state that occurs during the operation of the software; syntax size and semantic size ^[1] , the syntax size is The number of lines of code affected by a fault. The semantic size is the size of the input space with incorrect output. The imperfect structure in the software system may lead to the eventual failure of the system. Software faults are usually resolved by software testing and software fault location. Common software failure models are as follows: classification according to the stage of error occurrence, requirements analysis errors, summary design errors, detailed design errors, coding errors, etc .; classification according to the consequences of failure, including minor errors, medium errors, more serious errors, Serious errors, very serious errors, most serious errors; classification according to the nature of the error, there are requirements errors, functional and performance errors, structural errors, data errors, implementation and coding errors, integration errors, test errors, etc .; classification according to the type of error, there are documents Errors, syntax errors, binding and packaging errors, assignment errors, interface errors, data errors, function errors, system errors, environmental errors, etc. ^[2] .

Perform termination hardware failure

Hardware failure is caused by the damage or poor performance of the components that make up the computer system components, mainly due to the physical failure of the system's components, or other parameters exceeding the limit, such as short circuits caused by component failure, Open circuit; the drift range of component parameters exceeds the allowable range to change the main frequency clock; the logic relationship is chaotic due to power grid fluctuations.

classification

On the whole, hardware failures can be roughly divided into the following three categories.

1. Device failure This type of failure is mainly caused by components on the board, connectors and printed boards.

2. Mechanical failure Mechanical failure usually occurs mainly in external equipment, and this type of failure is relatively easy to find.

Common mechanical failures of peripheral devices include: broken needles or wear of the printer, damaged ribbon, stuck motors, and inadequate paper feed mechanism; wear or misalignment of the magnetic head of the floppy disk drive; poor contact of the keyboard keys and fatigue caused by the spring keys Wait.

3. Storage medium failure This type of failure is mainly due to the damage of the floppy disk or hard disk storage medium, which causes the failure of system boot information data and other reasons.

the reason

Internal cause. Internal causes are caused by poor performance of the internal components of the device, component corrosion, false soldering, desoldering, connectors, contacts, printed circuit board leakage, tin connection, copper break, power supply not properly grounded, components and mechanical parts reaching the end of their life malfunction.

External cause. Caused by external conditions, such as damage to the power supply and circuit components due to abnormal grid voltage, long-term work caused high-power components and some mechanical parts in the equipment to burn out, and dust and other components to cause aging, static electricity, and performance degradation. In addition, excessive dust deposition is also an external cause.

Human reasons: Bad usage habits and wrong operations are also a cause of computer failure. Hardware failure judgment: The computer has black screen, no display when booting, frequent crashes, IDE port, USB port failure, abnormal display color, display jitter, fancy screen, hard disk cannot read and write, system cannot start, hard disk has bad sectors, etc. To understand the hardware failure of the computer, you must first understand the computer's startup principle to determine whether the hardware is faulty ^[3] .