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The Ruputer is a wristwatch computer developed in 1998 by Seiko Instruments, a subsidiary of the Seiko Group. It was introduced on 10 June 1998. [1] In the US, it was later marketed as the onHand PC by Matsucom. The Ruputer has a 16-bit, 3.6 MHz processor and 2 MB of non-volatile storage memory and 128 KB of RAM.
Timex Datalink or Timex Data Link is a line of early smartwatches manufactured by Timex and is considered a wristwatch computer. [1] It is the first watch capable of downloading information wirelessly from a computer. [2] [3] As the name implies, datalink watches are capable of data transfer through linking with a computer. [4]
The WatchPad 1.5 features a 320 × 240 QVGA monochrome touch sensitive display and runs Linux 2.4. [8] [9] It also features calendar software, Bluetooth, 8 MB of RAM and 16 MB of flash memory. [10] [11] Citizen was hoping to market the watch to students and businessmen, with a retail price of around $399. [11]
In nearly all quartz clocks and watches, the frequency is 32 768 Hz, [1] and the crystal is cut in a small tuning fork shape on a particular crystal plane. [2] This frequency is a power of two ( 32 768 = 2 15 ), just high enough to exceed the human hearing range , yet low enough to keep electric energy consumption , cost and size at a modest ...
The first digital watch was the Pulsar, introduced by the Hamilton Watch Company in 1972. The "Pulsar" became a brand name, and would later be acquired by Seiko in 1978. In 1982, a Pulsar watch (NL C01) was released which could store 24 digits, likely making it the first watch with user-programmable memory, or the first "memorybank" watch.
Csem-beta1. In 1966 after six years of research at Centre Electronique Horloger laboratories in Neuchâtel (CEH), Switzerland the first prototype of a quartz wristwatch was produced, the beta-1, this was the first real quartz wristwatch and operated using an 8192 Hz quartz oscillator, which was mounted to an in-house integrated circuit.
It specialized in LED-powered, five-function (hour, minutes, second, day and date) digital watches. The Armitron brand name is a combination of “Armin” and “electronics”. Often using cases from Switzerland and bracelets from Hong Kong, Armitron watches were built in a custom-designed factory in Arlington, Texas.
Digital clocks typically use the 50 or 60 hertz oscillation of AC power or a 32,768 hertz crystal oscillator as in a quartz clock to keep time. Most digital clocks display the hour of the day in 24-hour format; in the United States and a few other countries, a commonly used hour sequence option is 12-hour format (with some indication of AM or PM).
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