Keyboards & MIDI | Musician's Friend. No matter where you are in the world, we'll help you find musical instruments that fit you, your music and your style. Our site appears in English, but all prices will display in your local currency.
Technology products buying guide - Find the best bargains on the latest products in tech.
![Replacement Receiver For Microsoft Arc Mouse Black Replacement Receiver For Microsoft Arc Mouse Black](https://images-na.ssl-images-amazon.com/images/I/41f3llmZvWL._SY450_.jpg)
As you shop, we'll only show you items that ship to Ukraine. If you prefer to see our full catalog, change the Ship- To country to U.
2.4G Mini Wireless Keyboard Fly Air Mouse Touchpad For Android Smart TV Box PC. SurfaceTip › Buyer's Guide › Accessories › Best Wireless Mouse for Microsoft Surface. Best Wireless Mouse for Microsoft Surface. Microsoft Surface with Windows. USA.com provides easy to find states, metro areas, counties, cities, zip codes, and area codes information, including population, races, income, housing, school.
Personal digital assistant - Wikipedia. A personal digital assistant (PDA), also known as a handheld PC,[1][2] is a mobile device that functions as a personal information manager.
PDAs were largely discontinued in the early 2. OS and Android.[3]Nearly all PDAs have the ability to connect to the Internet. A PDA has an electronic visual display, letting it include a web browser. All models also have audio capabilities, allowing usage as a portable media player, and also enabling most of them to be used as mobile phones. Most PDAs can access the Internet, intranets or extranets via Wi- Fi or Wireless Wide Area Networks. Sometimes, instead of buttons, PDAs will employ touchscreen technology.
The first PDA, the Organizer, was released in 1. Psion, followed by Psion's Series 3, in 1. The latter began to resemble the more familiar PDA style, including a full keyboard.[4][5] The term PDA was first used on January 7, 1. Apple Computer. CEOJohn Sculley at the Consumer Electronics Show in Las Vegas, Nevada, referring to the Apple Newton.[6] In 1. IBM introduced the first PDA with full mobile phone functionality, the IBM Simon, which can also be considered the first smartphone.
Then in 1. 99. 6, Nokia introduced a PDA with mobile phone functionality, the 9. Communicator, which became the world's best- selling PDA.
Another early entrant in this market was Palm, with a line of PDA products which began in March 1. Typical features[edit]A typical PDA has a touchscreen for navigation, a memory card slot for data storage, and Ir. DA, Bluetooth and/or Wi- Fi. However, some PDAs may not have a touchscreen, using softkeys, a directional pad, and a numeric keypad or a thumb keyboard for input. To have the functions expected of a PDA, a device's software typically includes an appointment calendar, a to- do list, an address book for contacts, a calculator, and some sort of memo (or "note") program. PDAs with wireless data connections also typically include an email client and a Web browser, and may or may not include telecommunications functionality.
Touchscreen[edit]Many of the original PDAs, such as the Apple Newton and Palm Pilot, featured a touchscreen for user interaction, having only a few buttons—usually reserved for shortcuts to often- used programs. Some touchscreen PDAs, including Windows Mobile devices, had a detachable stylus to facilitate making selections. The user interacts with the device by tapping the screen to select buttons or issue commands, or by dragging a finger (or the stylus) on the screen to make selections or scroll. Typical methods of entering text on touchscreen PDAs include: A virtual keyboard, where a keyboard is shown on the touchscreen. Text is entered by tapping the on- screen keyboard with a finger or stylus. An external keyboard connected via USB, Infrared port, or Bluetooth.
Some users may choose a chorded keyboard for one- handed use. Handwriting recognition, where letters or words are written on the touchscreen, often with a stylus, and the PDA converts the input to text. Recognition and computation of handwritten horizontal and vertical formulas, such as "1 + 2 =", may also be a feature. Stroke recognition allows the user to make a predefined set of strokes on the touchscreen, sometimes in a special input area, representing the various characters to be input. The strokes are often simplified character shapes, making them easier for the device to recognize. One widely known stroke recognition system is Palm's Graffiti.
Despite research and development projects, end- users experience mixed results with handwriting recognition systems. Some find it frustrating and inaccurate, while others are satisfied with the quality of the recognition.[7]Touchscreen PDAs intended for business use, such as the Black. Berry and Palm Treo, usually also offer full keyboards and scroll wheels or thumbwheels to facilitate data entry and navigation. Many touchscreen PDAs support some form of external keyboard as well.
Specialized folding keyboards, which offer a full- sized keyboard but collapse into a compact size for transport, are available for many models. External keyboards may attach to the PDA directly, using a cable, or may use wireless technology such as infrared or Bluetooth to connect to the PDA. Newer PDAs, such as the HTC HD2, Apple i.
Phone, Apple i. Pod Touch, and Palm Pre, Palm Pre Plus, Palm Pixi, Palm Pixi Plus, Google Android (operating system) include more advanced forms of touchscreen that can register multiple touches simultaneously. These "multi- touch" displays allow for more sophisticated interfaces using various gestures entered with one or more fingers. Memory cards[edit]Although many early PDAs did not have memory card slots, now most have either some form of Secure Digital (SD) slot, a Compact. Flash slot or a combination of the two.
Although designed for memory, Secure Digital Input/Output (SDIO) and Compact. Flash cards are available that provide accessories like Wi- Fi or digital cameras, if the device can support them. Some PDAs also have a USB port, mainly for USB flash drives.[dubious– discuss] Some PDAs use micro. SD cards, which are electronically compatible with SD cards, but have a much smaller physical size.
Wired connectivity[edit]While early PDAs connected to a user's personal computer via serial ports or another proprietary connection,[specify] many today connect via a USB cable. Older PDAs were unable to connect to each other via USB, as their implementations of USB didn't support acting as the "host". Some early PDAs were able to connect to the Internet indirectly by means of an external modem connected via the PDA's serial port or "sync" connector,[8] or directly by using an expansion card that provided an Ethernet port. Wireless connectivity[edit]Most modern PDAs have Bluetooth, a popular wireless protocol for mobile devices.
Bluetooth can be used to connect keyboards, headsets, GPS receivers, and other nearby accessories. It's also possible to transfer files between PDAs that have Bluetooth. Many modern PDAs have Wi- Fi wireless network connectivity and can connect to Wi- Fi hotspots.[9] All smartphones, and some other modern PDAs, can connect to Wireless Wide Area Networks, such as those provided by cellular telecommunications companies. Older PDAs from the 1. Ir. DA (infrared) port allowing short- range, line- of- sight wireless communication.
Few current models use this technology, as it has been supplanted by Bluetooth and Wi- Fi. Ir. DA allows communication between two PDAs, or between a PDA and any device with an Ir. DA port or adapter.
Some printers have Ir. DA receivers,[1. 0] allowing Ir. DA- equipped PDAs to print to them, if the PDA's operating system supports it. Universal PDA keyboards designed for these older PDAs use infrared technology.[citation needed] Infrared technology is low- cost and has the advantage of being allowed aboard.
Synchronization[edit]Most PDAs can synchronize their data with applications on a user's computer. This allows the user to update contact, schedule, or other information on their computer, using software such as Microsoft Outlook or ACT!, and have that same data transferred to PDA—or transfer updated information from the PDA back to the computer. This eliminates the need for the user to update their data in two places. Synchronization also prevents the loss of information stored on the device if it is lost, stolen, or destroyed. When the PDA is repaired or replaced, it can be "re- synced" with the computer, restoring the user's data. Some users find that data input is quicker on their computer than on their PDA, since text input via a touchscreen or small- scale keyboard is slower than a full- size keyboard.
Transferring data to a PDA via the computer is therefore a lot quicker than having to manually input all data on the handheld device.[citation needed]Most PDAs come with the ability to synchronize to a computer. This is done through synchronization software provided with the handheld, or sometime with the computer's operating system. Examples of synchronization software include: Hot.
Sync Manager, for Palm OS PDAs. Microsoft Active. Sync, used by Windows XP and older Windows operating systems to synchronize with Windows Mobile, Pocket PC, and Windows CE PDAs, as well as PDAs running i. OS, Palm OS, and Symbian.
Microsoft Windows Mobile Device Center for Windows Vista, which supports Microsoft Windows Mobile and Pocket PC devices. Apple i. Tunes, used on Mac OS X and Microsoft Windows to sync i. OS devices (such as the i.