Sleep (system call)

A computer program (process, task, or thread) may sleep, which places it into an inactive state for a period of time. Eventually the expiration of an interval timer, or the receipt of a signal or interrupt causes the program to resume execution.

Usage

A typical sleep system call takes a time value as a parameter, specifying the minimum amount of time that the process is to sleep before resuming execution. The parameter typically specifies seconds, although some operating systems provide finer resolution, such as milliseconds or microseconds.

Windows

On Windows, the Sleep() function takes a single parameter of the number of milliseconds to sleep. The Sleep() function is included in kernel32.dll, but no sleep command (executable) is natively available for scripts (batch files). It can be found in collections of Windows utilities like Windows 2003 Resource Kit.

Unix

On Unix-like operating systems, the sleep() function is called providing a single parameter of type unsigned integer of the number of seconds to sleep. (For more precise sleep times one can use the usleep() function.)

Conjure One (album)

Conjure One is the self-titled debut album by Canadian electronic music project Conjure One, headed by Rhys Fulber. The album was released in September 2002 (see 2002 in music).

Track listing

All tracks written by Rhys Fulber, except where noted.

Sleep (disambiguation)

Human sleep and animal sleep (non-human) are a form of rest.

Sleep or Sleeping can also refer to:

In biology

In computer systems

In media and fine art

In music

Artists

ARQ-M

ARQ-M, short for Automatic Repeat reQuest, Multiplex, is a radio telegraphy protocol used to reliably forward telex messages over partially reliable radio links. It is a low-speed system designed to match the performance of landline telex systems and allow those messages to be forwarded over long distances using shortwave radios. The first ARQ-M link was built in the Netherlands, and began exchanging messages with a counterpart in New York in 1947.

ARQ-M is similar in concept to ARQ-E, but ARQ-E has no multiplex capability and uses a different 7 bit alphabet.

History

The telex system, which developed out of the telegraph system, is based on defined electric current levels that are interpreted as a mark or space signal. These are normally sent over well-defined networks with considerable infrastructure that keeps error rates very low. In contrast, radio communications are subject to a wide variety of noises and other signal problems that leads to losses. To forward telex messages successfully over radio links, some form of error correction should be applied.

TDM (Macau)

Teledifusão de Macau (TDM; Chinese: 澳廣視) is the first over-the-air radio and television network in Macau. It was established on 1 January 1982 during Portuguese administration. TDM offers two 24-hour radio services a Cantonese and a Portuguese channel) and it also offers television services 1 Cantonese, 1 Portuguese, 1 sports, 1 news, 1 HDTV and 1 international channel.

Radio Transmissions

Rádio Macau offers two channels, in Portuguese on FM 98.0 MHz and Cantonese on FM 100.7 MHz.

Local programmes on the Portuguese service of Rádio Macau begins from 07:00 to 20:00 on weekdays, and from 08:00 to 20:00 at weekends. Programmes from RDP Antena 1 are relayed for the rest of the time. The Cantonese and Mandarin service of Rádio Macau is also 24-hours, with total local programme outputs.

Television Transmissions

It also offers analogue terrestrial television services: TDM Ou Mun in Cantonese and Mandarin, Canal Macau in Portuguese, TDM Desporto (for sports), TDM Informação (for news), TDM HD (for high-definition television) and TDM Macau Satéllite for international broadcast. It also carry three CCTV channels (CCTV-13, CCTV-News, and CCTV-9) along with Strait Television and Hunan TV World.