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On 5 January 1975, the 12-bit field that had been used for dates in the TOPS-10 operating system for DEC PDP-10 computers overflowed, in a bug known as "DATE75". The field value was calculated by taking the number of years since 1964, multiplying by 12, adding the number of months since January, multiplying by 31, and adding the number of days since the start of the month; putting 2 12 − 1 ...
0x00041307: Either the task has no triggers or the existing triggers are disabled or not set. 0x00041308: Event triggers do not have set run times. 0x80010002: Call was canceled by the message filter; 0x80041309: A task's trigger is not found. 0x8004130A: One or more of the properties required to run this task have not been set.
Time-triggered architecture (abbreviated as TTA), also known as a time-triggered system, is a computer system that executes one or more sets of tasks according to a predetermined and set task schedule. [1] Implementation of a TT system will typically involve use of a single interrupt that is linked to the periodic overflow of a timer.
The Event Viewer uses event IDs to define the uniquely identifiable events that a Windows computer can encounter. For example, when a user's authentication fails, the system may generate Event ID 672. Windows NT 4.0 added support for defining "event sources" (i.e. the application which created the event) and performing backups of logs.
The High Precision Event Timer (HPET) is a hardware timer available in modern x86-compatible personal computers. Compared to older types of timers available in the x86 architecture, HPET allows more efficient processing of highly timing-sensitive applications, such as multimedia playback and OS task switching .
A watchdog timer (WDT, or simply a watchdog), sometimes called a computer operating properly timer (COP timer), [1] is an electronic or software timer that is used to detect and recover from computer malfunctions. Watchdog timers are widely used in computers to facilitate automatic correction of temporary hardware faults, and to prevent errant ...
libevent is a software library that provides asynchronous event notification. The libevent API provides a mechanism to execute a callback function when a specific event occurs on a file descriptor or after a timeout has been reached. libevent also supports callbacks triggered by signals and regular timeouts.
Since the original code page left 9 values (bytes) marked as "NOT USED" in the original specification, [7] these bytes were used later for additional characters needed for the Perso-Arabic script (for the Persian and Urdu languages), plus the euro sign. [8] The following table shows the extended version of Windows-1256.