Wednesday, February 20, 2013

Countdown timer free

A digital  timer shows the hours and minutes, and sometimes seconds as numbers again. The hours are as the numbers from 0/23 to be displayed, or if the numbers 1/12 following the analog  timer, but with the addition AM (Ante Meridiem) for before noon or PM (Post Meridiem ) for the afternoon. Sometimes there is still an indication for the half of the day. The minutes and seconds as the numbers 0 / to 59 displayed.

The egg timer counts, after a certain time to set the time back to zero, then gives a beep and stop.

Some  timers are incorporated into appliances, for example, the VCR, the computer, the time  timer, and are not, or not only intended for direct display time but also to events at a certain time to take place or the time or duration of certain events to register. Also an oven or microwave often has a digital  timer or egg timer sort built. (All this says nothing about the suitability of the device for eggs.)
Roman numerals

Many online timer have Roman numerals on the dial. It is almost always presented as the 4 'IIII' while the modern spelling of Roman numerals "IV" prescribes. It should be noted that 'IIII' traditionally lawful. There are several theories on why a timepiece ever 'IIII' writes, for example, because the first letters of the name of Jupiter (IVPITER) or because they want to avoid on the dial as often the characters X and V to use. A famous exception is the face of Big Ben.
Rehearsal Work

There are also watches that time on command, by pressing a button, audible (see Rehearsal Work).
Telephone beep
Notification Time Machine PTT

The telephone beep looks a bit like a rehearsal work. Here, however, a time  timer that constantly speaks but who only audible to those who press the button (ie that the number of the period of notice).

The adjacent unit was from 1934 to 1969 at the Dutch PTT in use. In particular, the company laboratory of the PTT, the Dr. Neherlaboratorium, plays an important role. The device uses a rotating drum on which film strips are - just as consistent as a sound film used. The top photo shows the right 24 pages on which the hours are recorded: "0 hours", "1 hour" to "23 hours". Behind one of the strips, there is a lamp which by the strip on a light-sensitive cell appears, so that the voice is heard via the telephone. Half a revolution later (bottom photo) is the right part of the drum and close the left, we see that the minutes of "zero" to "fifty-nine." Behind one of these strips is a lamp. Every minute the lights moved to another time audible.

The film strips were voiced by Cor Hoogendam, the sister of the inventor lark. The story goes that the daughter of the inventor was present when the unit was put into service and festive they surprised shouted "That's Aunt Cor!" when she heard the voice. Since then, the telephone beep behind the scenes "Aunt Cor" called.

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