applications unplugged: using ca-visual objects with handheld computers

Applications Unplugged

Using VO withHandheld Computers

Gary Starkgstark@RedbacksWeb.com

Gary Stark

gstark@RedbacksWeb.com

Applications UnpluggedUsing VO with Handheld Computers

If CellPhone:Off .or. ;CellPhone:SilentMode

SELF:Stay := TRUEEnd

• Once upon a time

• There was a mainframe computer

• Then there was the mini computer

• Then came the micro computer

• Today many use a laptop computer

• Except my dog

• He uses a yaptop

• Today:

– Handheld Computers– Palmtop Computers– Wearable Computers

• Small - Truly pocketable

• Versatile - Real applications

• Quick - Instant on

• Built-in connectivity– USB– Bluetooth– WLAN

• Inexpensive– from US$100

• Inexpensive

– From US$100

• The Contenders

– Palm OS devices – Windows CE

• Pocket PC 2002• CE 3.x (Handhelds)• Auto PC• Telephony

– Linux

• The Contenders

– Palm OS devices -• Palm series

• Handspring series

• Sony Clie

• Symbol

• Cellphones– Samsung, Kyocera, etc.

– Motorola Dragonball CPU

• The Contenders

– Windows Pocket PC 2002• Compaq iPAQ• Cassiopeia (E200, etc)• HP Journada• Symbol

– Intel StrongArm CPU

• The Contenders

– Windows CE - Other form factors• HP Journada HPC• Auto PC• Windows Embedded

– Linux• Sharp Zaurus

• Lost In Action– Apple's Newton

• Are They Organizers?

– Task management

– Contact management

– Time management

– Notepad

– Pocket calculator

– Fully programmable

– Expandable

• Effortless synchronization to desktop computers– Via cradle or cable– Via WLAN– Via modem

• Email

• Web Surfing

• Voice recorder

• Expandable– PCMCIA Cards

• WLAN

• Modem

• RAM

• GPS

• Cellphone

– CF Cards• WLAN

• Modem

• RAM

• MicroDrive

• Expandable– Multi Media / Secure Digital Cards

• RAM

– Custom Cards• Modem

• RAM

• Cellphone

• Bluetooth

• GPS

• Wireless– 802.11b

• Ethernet LAN• Access to corporate data

– Bluetooth• Personal networking• Closely held devices

– Printer

– Cellphone

– Camera

• Are They Toys?

– Fully progammable– Windows hosted development environments– Metrowerks CodeWarrior for Palm OS – Microsoft Embedded toolkit

• CE devices are .NET compliant

• Sega Dreamcast is a Windows CE device!

• Windows CE:

– Visual C++– Visual Basic– Visual J++– .NET– NS Basic

• Palm OS:

– MetroWerks CodeWarrior– AppForge– NS Basic– Pocket Studio

• Using A Handheld Computer

• The user interface– Palm/PPC devices use a stylus– No keyboard needed– Optional keyboards becoming commonplace

• H/PCs use keyboard

• No Keyboard

• Optimize user interface– Dropdowns– Checkboxes– Radio Buttons

• The Operating Environments

– Palm Pilot, Handspring Visor, Sony Clie, Palm based Cellphones

• Proprietary operating system

• Palm OS

– Windows CE Devices– Windows CE - 32 bit Windows API

– Linux Desktop

• Different versions of CE for– H/PC– Palm sized PC– Must compile for target CPU

• New Microsoft PPC specification– Intel StrrongArm CPU– All devices will use same core

• Application Ideas?

– In store data collection– Expense tracking– Time billing– Parking meters– Real Estate

– Electricity meters– In field sales orders– Education– Shopping Cart– Restaurant Orders

• Application Ideas?

• Warehouse management? – Real Time Data Access– Connect to various backends

• DBF

• SQL

– Wireless or wired

• Methodolgies

• Custom Applications

• IE Browser Interface

• Data Gathering

– Screen real estate is very limited– Keyboard entry may not be available– Handwriting recognition works, but ...

• KISS

• Consider Your Data

– Where does it originate?– Who uses it?– And why?

• Data validation?– Consider tools– Visual Objects, VB, .NET, PHP

• GUI Elements

– Drop down lists– Buttons - Push and Radio– Checkboxes– Calendar

• Make it easy for your user

• On The Desktop

• Design– Design

• On The Desktop

• Consider the partner O/S

• Consider the partner DBMS– DBF– SQL

• On The Desktop• Consider the partner application

– Visual Objects

– C++

– VB

– C#

– .NET

• On The Desktop

• Consider the data access methodologies– Direct access

• Custom Application• Browser Based

– XML– Delimited Text File

• In Your Hand– Consider your tools– Might be platform driven– Can't use Microsoft products on

Palm OS Devices– Extra Hardware

• Cost• Availability

• Consider the tools' restrictions– No xBase on either platform

• Can use a DOS emulator and compileand run Clipper applications on CE devices!

– ODBC is available on Windows CE– All can talk directly with PC platform

• Ideal for live, portable solutions in conjunction with a desktop PC

• Data, Data, Who's Got The data?– Handheld?– Desktop?– Both?

• Synchronization design

• Who is the source of truth?

• Any Questions?

applications unplugged: using ca-visual objects with handheld computers

contenders

handheld computers

gary stark

windows ce

handheld computers

applications

data

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