Rohith v, Girish D R & shyamprasad B Mniit banaswadigniit course : Rohith v, Girish D R & shyamprasad B Mniit banaswadigniit course ISAS Seminar on PDA by A overview of the pda : A overview of the pda Tuesday, July 28, 2009 2 Introduction : Introduction PDA stands for “Personal Digital Assistant”
PDA is a handheld computer with the capabilities of a mobile phone, portable media player, portable web browsing device etc…. Tuesday, July 28, 2009 3 Features of the pda : Features of the pda A typical PDA will have features such as
Touch screen/virtual keyboard
Memory card slot
Wired/wireless connectivity Tuesday, July 28, 2009 4 Touch screen/virtual keyboard : Touch screen/virtual keyboard The touch screen or virtual keyboard is required for inputting the text data using the stylus tool.
Virtual keyboard is connected via the external connection using USB/IR/Bluetooth. Tuesday, July 28, 2009 5 Memory cards : Memory cards Memory plays a major role in the PDA as it is used to store the data when it is used as a portable computer.
In addition to the existing memory, memory cards boost the capacity of the PDA. Tuesday, July 28, 2009 6 Connectivity : Connectivity Connectivity to the PDA could be via wired or wireless way.
Wireless connects to 802.11 connectivity. Tuesday, July 28, 2009 7 Calendar of events w r t pda : Calendar of events w r t pda 1980 - Psion defined the PDA.
1984 - Psion launched its first organizer, it was slightly longer and thicker than a large pack of cigarettes.
Psion 1 was followed by Psion II
Psion II was followed by a 3a series , which was the first to link to desktop PC for data transfers.
The Series 5 followed up the success of the 3a , Largest screen (640 X 240 pixel) and keyboard to date. Tuesday, July 28, 2009 8 Versions of pda : Versions of pda Kevin Fraser introduced two versions of PDA given as :-
Psion 2 Tuesday, July 28, 2009 9 initial versions of pda : initial versions of pda PSION1 PSION2 Tuesday, July 28, 2009 10 features of psion 1 : features of psion 1 Its operation , its visual appearance internal as well as external is quite impressive.
Its black case is not only very different from the Organiser II but also very stylish.
The display trim is quite attractive with its red and black outlines. Tuesday, July 28, 2009 11 Features of psion 2 : Features of psion 2 The Psion Printer has a fascinating design.
Bar code reader attached to the device.
The printer can be detached from the device design. Tuesday, July 28, 2009 12 Comparison of psion 1 & psion 2 : Comparison of psion 1 & psion 2 Psion 1 Psion 2 Device size is small
Display area is big
Keyboard keys are small
No printer attached
Only calculations could be made using the device. Device size is big
Display area is small
Keyboard keys are big
Bar code reading can also be done with basic calculations. Tuesday, July 28, 2009 13 PERSONAL DIGITAL ASSISTANCE : PERSONAL DIGITAL ASSISTANCE PSION SERIES -3
PSION SERIES-5 PSION -- 3 : PSION -- 3 The Psion 3 range of PERSONAL DIGITAL ASSISTANCE were made by Psion PLC. The four main variants are the Psion 3 (1991), the Psion 3a (1993), the Psion 3c (1996), and the Psion 3mx (1998) They had an original way of managing files:
the available program icons are shown in a horizontal line and the associated files drop down beneath them . The Psion 3, together with the Acorn Pocket Book were the first truly useful Personal Digital Assistants or PDAs. Tuesday, July 28, 2009 15 PSION-3 & PSION-3a : PSION-3 & PSION-3a The Acorn Pocket Book and Pocket Book II was marketed by Acorn Computers. The most upgrade to the Psion 3a is a larger screen of 480 x 160. The Psion 3a range was revised to include models with 1MB or 2MB of RAM and additional software was preloaded into the ROM. Psion 3 and 3a marketed as the Acorn Pocket Book and Acorn Pocket Book II. Tuesday, July 28, 2009 16 PSION-3C : PSION-3C The Psion 3c was the next variant after the Psion 3a. It has a slightly different external appearance to the earlier variants because a redesigned badge is placed centrally on the lid A port for an infra red connection is visible. The backup battery for the Psion 3c is a CR1620. Tuesday, July 28, 2009 17 Slide 18: the 3mx is essentially an upgraded Series 3c. The 3mx comes in two models: 1 MB and 2 MB. The psion series 3mx was last upgradable. Psion 3mx Tuesday, July 28, 2009 18 Standard psion-3 with modem : Standard psion-3 with modem screen with menu Shortcut keys Attached keys MODEM Tuesday, July 28, 2009 19 DISADVANTAGE OF PSION -3 : DISADVANTAGE OF PSION -3 Breakages of any of the four hinges; Loss of function in the button bar between the two halves ; When link of two wires, system can be damage. Leading to a serious display problem with the appearance of vertical lines. PSION SERIES -5 covers the disadvantages of psion-3. Tuesday, July 28, 2009 20 PSION--5 : PSION--5 Tuesday, July 28, 2009 21 Slide 22: The Psion Series 5 comes in two main variants, the Series 5(launched in 1997) and the Series 5mx (1999) The external appearance of the Psion Series 5 and the Psion Series 5mx are broadly similar. the latter having a faster processor, clearer screen, and updated software. There is also a rare Series 5mx Pro, which differs only in having the operating system loaded into RAM and hence upgradeable. The screens are not interchangeable because of different screen cables. But their mainboards and other internal components are different and not interchangeable. Features Tuesday, July 28, 2009 22 Slide 23: Psion Series 5mx The EPOC operating system, now known as Symbian OS which is built-in. It's powered by two AA batteries, typically giving 10 - 20 hours of use. Tuesday, July 28, 2009 23 continue…… : continue…… The display is a touch-sensitive, backlit half-VGA (640x240-pixel) LCD . Infra-red serial connections are provided, along with a speaker and microphone, giving dictation ability as well as playing music. Along with applications for word processing, It includes spreadsheets, databases, email, contact and diary management, and software development using Psion's own OPL language. The 'Executive Edition' of the 5mx was bundled with various hardware and software extras including version 3.62 of the Opera web browser and a mains adapter. The keyboard is generally considered to be among the best for its size, with large-travel keys and touch-type capability. Tuesday, July 28, 2009 24 Disadvantages of psion-5 : Disadvantages of psion-5 The keyboard slides forward as the device opens to counterb- alance the display
The moving parts and hinges can wear out or break.
Because of a design fault in the screen cable where tooling holes cause unnecessary stressing Tuesday, July 28, 2009 25 conclusion : conclusion The PDA’s make the life simpler for a human being, with its user friendly functions.
It also is evident that this makes human being more vulnerable to dependency towards the technology. Tuesday, July 28, 2009 26 references : references www.wikipedia.org
Google search Tuesday, July 28, 2009 27 Slide 28: Tuesday, July 28, 2009 28