Wristwatch computer
Encyclopedia
A wristwatch computer is a wearable computer
Wearable computer
Wearable computers are miniature electronic devices that are worn by the bearer under, with or on top of clothing. This class of wearable technology has been developed for general or special purpose information technologies and media development...

 that fits like a wristwatch. It may offer features similar to a PDA
PDA
A PDA is most commonly a Personal digital assistant, also known as a Personal data assistant, a mobile electronic device.PDA may also refer to:In science, medicine and technology:...

, palmtop or tablet computer
Tablet computer
A tablet computer, or simply tablet, is a complete mobile computer, larger than a mobile phone or personal digital assistant, integrated into a flat touch screen and primarily operated by touching the screen...

. Similar terms which refer to the same concept are wrist computer, computer watch, wrist-top, wrist PDA and Wrist Worn PC (WWPC).

Such devices may include features such an accelerometer
Accelerometer
An accelerometer is a device that measures proper acceleration, also called the four-acceleration. This is not necessarily the same as the coordinate acceleration , but is rather the type of acceleration associated with the phenomenon of weight experienced by a test mass that resides in the frame...

, thermometer
Thermometer
Developed during the 16th and 17th centuries, a thermometer is a device that measures temperature or temperature gradient using a variety of different principles. A thermometer has two important elements: the temperature sensor Developed during the 16th and 17th centuries, a thermometer (from the...

, altimeter
Altimeter
An altimeter is an instrument used to measure the altitude of an object above a fixed level. The measurement of altitude is called altimetry, which is related to the term bathymetry, the measurement of depth underwater.-Pressure altimeter:...

, barometer
Barometer
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather...

, compass
Compass
A compass is a navigational instrument that shows directions in a frame of reference that is stationary relative to the surface of the earth. The frame of reference defines the four cardinal directions – north, south, east, and west. Intermediate directions are also defined...

, chronograph
Chronograph
A chronograph is a timepiece or watch with both timekeeping and stopwatch functions as well as other functions. Pocket watch chronographs were produced as early as the 18th century but did not become popular until the 1820s...

, dive computer
Dive computer
A dive computer or decompression meter is a device used by a scuba diver to measure the time and depth of a dive so that a safe ascent profile can be calculated and displayed so that the diver can avoid decompression sickness.- Purpose :...

, calculator
Calculator
An electronic calculator is a small, portable, usually inexpensive electronic device used to perform the basic operations of arithmetic. Modern calculators are more portable than most computers, though most PDAs are comparable in size to handheld calculators.The first solid-state electronic...

, cell phone, GPS, graphical display, speaker
Computer speaker
Computer speakers, or multimedia speakers, are speakers external to a computer, that disable the lower fidelity built-in speaker. They often have a low-power internal amplifier. The standard audio connection is a 3.5 mm stereo jack plug often color-coded lime green for computer sound cards...

, scheduler
Calendaring software
Calendaring software is software that minimally provides users with an electronic version of a calendar. Additionally, the software may provide an appointment book, address book, and/or contact list. These tools are an extension of many of the features provided by time management software such as...

, watch
Watch
A watch is a small timepiece, typically worn either on the wrist or attached on a chain and carried in a pocket, with wristwatches being the most common type of watch used today. They evolved in the 17th century from spring powered clocks, which appeared in the 15th century. The first watches were...

, etc. It may communicate with a wireless headset, heads-up display, insulin pump
Insulin pump
The insulin pump is a medical device used for the administration of insulin in the treatment of diabetes mellitus, also known as continuous subcutaneous insulin infusion therapy.The device includes:...

, microphone
Microphone
A microphone is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal. In 1877, Emile Berliner invented the first microphone used as a telephone voice transmitter...

, modem
Modem
A modem is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data...

, or other external device.

Any computer
Computer
A computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem...

 has a data processor, memory, input and output. It may collect information from internal or external sensors. It may control, or retrieve data from, other instruments or computers. It may support wireless technologies like Bluetooth
Bluetooth
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...

, WiFi
WIFI
WIFI is a radio station broadcasting a brokered format. Licensed to Florence, New Jersey, USA, the station is currently operated by Florence Broadcasting Partners, LLC.This station was previously owned by Real Life Broadcasting...

, and GPS. However, it is possible a "wristwatch computer" may just serve as a front end for a remote system, as in the case of watches utilizing cellular technology or WiFi.

1970s-1980s

Seiko
Seiko
, more commonly known simply as Seiko , is a Japanese watch company.-History and ongoing developments:The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the...

, a Japanese watch company, was one of the first to develop wrist computing technology. The first digital watch, which debuted in 1972, was the Pulsar
Pulsar (watch)
Pulsar is a brand of watch and a division of Seiko Watch Corporation of America . While Pulsar was the world's first electronic digital watch, today Pulsar watches are usually analog...

 manufactured by Hamilton Watch Company
Hamilton Watch Company
The Hamilton Watch Company was originally formed to produce high quality pocket watches and wristwatches mid-range and luxury. Hamilton would become a corporate conglomerate diversified in other operations...

. "Pulsar" became a brand name which would later be acquired by Seiko in 1978. In 1982, a Pulsar watch (NL C01) was released which could store 24 digits, making it most likely the first watch with user-programmable memory, or "memorybank" watch. With the introduction of personal computers in the 1980s, Seiko began to develop watches with computing ability. The Data 2000 watch (1983) came with an external keyboard for data-entry. Data was synced from the keyboard to the watch via electro-magnetic coupling (wireless docking). The name stems from its ability to store 2000 characters. The D409 was the first Seiko model with on-board data entry (via a miniature keyboard) and featured a dot matrix
Dot matrix
A dot matrix is a 2-dimensional array of LED used to represent characters, symbols and images.Typically the dot matrix is used in older computer printers and many digital display devices. In printers, the dots are usually the darkened areas of the paper...

 display. Its memory was tiny, at only 112 digits. It was released in 1984 in gold, silver and black. These models were followed by many others by Seiko during the 1980s, most notably the "RC Series":

Seiko RC series

The RC-1000 Wrist Terminal was the first Seiko model to interface with a computer, and was released in 1984. It was compatible with most of the popular PCs of that time, including Apple II,II+ and IIe, the Commodore 64, IBM PC, NEC 8201, Tandy Color Computer, Model 1000, 1200, 2000 and TRS-80 Model I, III, 4 and 4p.

The RC-20 Wrist Computer was released in 1985. It had a SMC84C00 8-bit Z-80 microprocessor; 8K of ROM and 2K of RAM. It had applications for scheduling, memos, and world time and a four-function calculator app. The dot-matrix LCD displayed 42x32 pixels, and more importantly, was touch-sensitive. Like the RC-1000, it could be connected to a personal computer, in this case through a proprietary cable. It was also notable in that it could be programmed, although its small display and limited storage severely limited application development.

The RC-4000 PC Data graph also released in 1985, was dubbed the "world's smallest computer terminal". It had 2K of storage. The RC-4500 (1985), also known as the Wrist Mac, had the same features as the RC-4000, but came in a variety of bright, flashy colors.

Other brands

During the 1980s, Casio began to market a successful line of "computer watches", in addition to its calculator watch
Calculator watch
A calculator watch is a watch with a calculator built into it.- History :Calculator watches first appeared in the Mid 1970s introduced by Pulsar and Hewlett Packard. Several watch manufacturers have made calculator watches over the years, but the Japanese electronics company Casio produced the...

es. Most notable was the Casio data bank
Casio data bank
The Databank watches are a series of watches manufactured by Casio which allow data storage such as telephone numbers, email addresses, and usually incorporate a calculator. Today there are at least two Databank watches that also include a TV/VC remote control feature...

 series. There was also the Nelsonic game watches and many other novelty "game watches" produced by Casio and other companies.

Linux watch

In June 2000, IBM
IBM
International Business Machines Corporation or IBM is an American multinational technology and consulting corporation headquartered in Armonk, New York, United States. IBM manufactures and sells computer hardware and software, and it offers infrastructure, hosting and consulting services in areas...

 displayed a prototype for a wristwatch that ran Linux
Linux
Linux is a Unix-like computer operating system assembled under the model of free and open source software development and distribution. The defining component of any Linux system is the Linux kernel, an operating system kernel first released October 5, 1991 by Linus Torvalds...

. The original version had only 6 hours of battery life, which was later extended to 12. It featured 8MB of memory and ran Linux 2.2. The device was later upgraded with an accelerometer, vibrating mechanism, and fingerprint sensor. IBM began to collaborate with Citizen Watch Co.
Citizen Watch Co.
is the core company of a Japanese global corporate group based in Tokyo, Japan. The company was originally founded as Shokosha Watch Research Institute in 1918 and is currently known as the manufacturer of CINCOM precision lathe machine tools as well as CITIZEN watches. The trade name originated...

 to create the "WatchPad". The WatchPad 1.5 features 320 x 240 QVGA display and runs Linux 2.4. It also features calendar software, bluetooth
Bluetooth
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...

, 8MB of DRAM and 16MB of flash memory. Citizen was hoping to market the watch to students and businessmen, with a retail price of around $399. However, the project was discontinued sometime around 2001-2002.

ZYPAD

The ZYPAD is a wristwatch computer which fits on a user's wrist like a bracer
Bracer
A bracer is a strap or sheath, commonly made of leather, stone, or plastic that covers the inside of an archer's arm to protect it while shooting. Bracers keep the inside of the archer's forearm from getting hurt by the string of the bow or the fletching of the arrow; they also prevent loose...

 and offers interface port features similar to laptop computer. It was developed by Parvus, a military contractor, and Eurotech
Eurotech
Eurotech is a company dedicated to the research, development, production and marketing of miniature computers and high performance computers .-Description:...

. It is arguable whether it qualifies as a watch, but it is referred to as a "Wrist Worn PC". It is able to run either Linux
Embedded Linux
Embedded Linux is the use of Linux in embedded computer systems such as mobile phones, personal digital assistants, media players, set-top boxes, and other consumer electronics devices, networking equipment, machine control, industrial automation, navigation equipment and medical instruments...

 or Windows CE
Windows CE
Microsoft Windows CE is an operating system developed by Microsoft for embedded systems. Windows CE is a distinct operating system and kernel, rather than a trimmed-down version of desktop Windows...

, and can sense motion, allowing such possibilities of use such as going into standby mode when a user lowers his/her arm. It can determine its position by dead reckoning
Dead reckoning
In navigation, dead reckoning is the process of calculating one's current position by using a previously determined position, or fix, and advancing that position based upon known or estimated speeds over elapsed time, and course...

 as well as via GPS. It supports Bluetooth
Bluetooth
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...

, IrDA
IRDA
IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...

, and WiFi
WIFI
WIFI is a radio station broadcasting a brokered format. Licensed to Florence, New Jersey, USA, the station is currently operated by Florence Broadcasting Partners, LLC.This station was previously owned by Real Life Broadcasting...

.

The ZYPAD debuted in 2006 and the ZYPAD WL 1000 was the first marketed device, followed by the WL 1100. Initial retail prices were set to be around $2000. The Zypad WR1100 debuted in 2008 and features housing made out of high strength fiberglass-reinforced nylon-magnesium alloy and a biometric fingerprint scanner.

Other examples

  • Fossil Wrist PDA
    Fossil Wrist PDA
    The Fossil Wrist PDA is a specialized wristwatch that runs Palm OS. The newer incarnation, which does not include Palm OS, is called the Fossil WristNet watch.- Product history :...

     - A watch which runs Palm OS and has 8MB of memory.
  • Ruputer
    Ruputer
    The Ruputer was a wristwatch computer developed in 1998 by Seiko. In the US, it was later marketed as the OnHand PC by Matsucom.The Ruputer had a 16-bit, 3.6 MHz processor and 2 MB of non-volatile storage memory and 128 KB of RAM. Its display was a 102×64 pixel monochrome LCD. Its main...

     (also known as "OnHand PC") - A computer watch with 2MB of memory
  • Timex Datalink
    Timex Datalink
    Timex Datalink or Timex Data Link was a line of watches manufactured by Timex. As the name implies datalink watches are capable of data transfer through linking with a computer...

     series
  • Calculator watch
    Calculator watch
    A calculator watch is a watch with a calculator built into it.- History :Calculator watches first appeared in the Mid 1970s introduced by Pulsar and Hewlett Packard. Several watch manufacturers have made calculator watches over the years, but the Japanese electronics company Casio produced the...

    es
  • the 6th-gen iPod nano
    IPod nano
    iPod Nano is a digital media player designed and marketed by Apple Inc.. The first generation of iPod Nano was introduced on September 7, 2005 as a replacement for iPod Mini. It uses flash memory for storage. iPod Nano has gone through six models, or generations, since its introduction...

     is a detachable bracket for watch bands, and can function as a wristwatch media player
    Portable media player
    A portable media player or digital audio player, is a consumer electronics device that is capable of storing and playing digital media such as audio, images, video, documents, etc. the data is typically stored on a hard drive, microdrive, or flash memory. In contrast, analog portable audio...

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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