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SIMPUTERSSIMPUTERSRADICAL SIMPLICITY TO UNIVERSAL ACCESSRADICAL SIMPLICITY TO UNIVERSAL ACCESS

PREPARED BYPREPARED BY

NISHADHNISHADH

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INTRODUCTIONINTRODUCTION

Simputer:Simple,Inexpensive, MultiSimputer:Simple,Inexpensive, Multi--linguallingual

comPUTER.comPUTER. SIMPUTERS ARE THE LOW COST PORTABLESIMPUTERS ARE THE LOW COST PORTABLE

ALTERNATIVE TO PCs.ALTERNATIVE TO PCs.

The keyto bridgingtheThe keyto bridgingtheDIGITAL DIVIDEDIGITAL DIVIDE istoisto

haveshareddevicesthatpermittrulysimpleandhaveshareddevicesthatpermittrulysimpleandnaturaluserinterfaces based onsight,touchnaturaluserinterfaces based onsight,touchandaudio.andaudio.

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SIMPUTERSIMPUTER

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HARDWARE SPECIFICATIONSHARDWARE SPECIFICATIONS

HardwareHardware

-- CPU 32CPU 32--bitStrong ArmSAbitStrong ArmSA--1100 RISC CPU running1100 RISC CPU running

at200MHzat200MHz

-- 32 MB ofDRAM32 MB ofDRAM -- 24 MB Flashfor PermanentStorage (DOC)24 MB Flashfor PermanentStorage (DOC)

-- DisplayI/F 320x240 Monochrome LCD Display PanelDisplayI/F 320x240 Monochrome LCD Display Panel

InterfacesInterfaces

-- TouchTouch--panel Overlay on LCD Displayusedwithapanel Overlay on LCD Displayusedwithaplastic stylus (Pen)plastic stylus (Pen)

-- Speakerand MIC JacksSmartcard ConnectorSpeakerand MIC JacksSmartcard Connector

-- RJRJ--11Telephone Jack11Telephone Jack

-- USB ConnectorUSB Connector

DimensionsDimensions

--Approximately 8cmx13 cmx 2 cmApproximately 8cmx13 cmx 2 cm

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SOFTWARE SPECSOFTWARE SPEC

System SoftwareSystem Software

-- OperatingSystem: LINUXOperatingSystem: LINUX -- SoftSoft--Modem AlgorithmsV.34/V.17 Data/Fax ModemTechnology.Modem AlgorithmsV.34/V.17 Data/Fax ModemTechnology.

ApplicationSoftwareApplicationSoftware

-- imliimli:anIML browser:anIML browser -- TapatapTapatap:Inputmethod:Inputmethod -- Internetaccess (Browser, Email,etc.)Internetaccess (Browser, Email,etc.)

-- DhvaniDhvani:Text:Text--toto--SpeechSoftwareSpeechSoftware

-- MP3 PlayerMP3 Player

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LICENSELICENSE

Thesystemsoftware oftheSimputer,sinceitis LinuxThesystemsoftware oftheSimputer,sinceitis LinuxbasedisunderGPL. Wehave beenworking onalicensebasedisunderGPL. Wehave beenworking onalicense

similarto theGPL, butapplicableto hardwaresimilarto theGPL, butapplicableto hardware..

THE SIMPUTERISED DEVICEDMANUFACTURING LICENSETHE SIMPUTER DEVICE

MANUFACTURING LICENSE

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ADVANTAGES OVER OTHERADVANTAGES OVER OTHER

HANDHELDSHANDHELDS TheSimputerismuchmorepowerfulthana Palm. ForTheSimputerismuchmorepowerfulthana Palm. For

example,interms ofscreensize (320x240),memoryexample,interms ofscreensize (320x240),memory

capabilities (32MB RAM) andthe OS (GNU/Linux).capabilities (32MB RAM) andthe OS (GNU/Linux). Thesmart cardreaderintheSimputer. TheInformationThesmart cardreaderintheSimputer. TheInformation

Markup Language (IML) thatis (amongstotherthings)Markup Language (IML) thatis (amongstotherthings)smartcardaware. Theuse ofextensiveaudio inthesmartcardaware. Theuse ofextensiveaudio inthe

form oftextform oftext--toto--s

peechan

daudiosn

ippets.

speec

han

daudiosn

ippets.

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PRESENTSTATUSPRESENTSTATUS

PicopetaSimputers PvtLtd announcedPicopetaSimputers PvtLtd announcedthatthe AmidaSimputerwaslaunchedatthatthe AmidaSimputerwaslaunchedatthe Chowdiahmemorialhallin Bangalorethe Chowdiahmemorialhallin Bangaloreon 26th March 2004.on 26th March 2004.

Theprojected costoftheSimputerisTheprojected costoftheSimputeris

aboutRs 9000 (US$ 200) atlargevolumesaboutRs 9000 (US$ 200) atlargevolumes

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Database Support forDatabase Support for

Embedded Lightweight DevicesEmbedded Lightweight Devices

SightSight

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Small DBMSs, e.g., for HandheldsSmall DBMSs, e.g., for Handhelds Small, Convenient, CarryanywhereSmall, Convenient, Carryanywhere

PowerfulPowerful

E.g. SimputerE.g. Simputer-- 206MHz, 32MB SDRAM, 24206MHz, 32MB SDRAM, 24MB Flashmemory, LCD display,SmartcardMB Flashmemory, LCD display,Smartcard

ApplicationsApplications

PersonalInfo ManagementPersonalInfo Management

EE--dairydairy

Enterprise ApplicationsEnterprise Applications

HealthHealth--care, Microcare, Micro--bankingbanking

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IssuesinImplementationIssuesinImplementation

Small DBMSvs. Disk DBMSSmall DBMSvs. Disk DBMS Handheld DB isFlashmemory basedHandheld DB isFlashmemory based

Disk readtimeisverysmallDisk readtimeisverysmall

Storagemodelshould considersmallmemoryand computationStoragemodelshould considersmallmemoryand computationpowerpower

Transactionmanagementandsynchronizationhaveto considerTransactionmanagementandsynchronizationhaveto considerdisconnections,mobilityand communication costdisconnections,mobilityand communication cost

Handheld OperatingSystemprovideslesserfacilitiesHandheld OperatingSystemprovideslesserfacilities

E.g. no multiE.g. no multi--taskingsupportin PalmOStaskingsupportin PalmOS

BettersecuritymeasuresarerequiredashandheldsareeasilyBettersecuritymeasuresarerequiredashandheldsareeasilystolen,damagedandloststolen,damagedandlost

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Compressionin DBCompressionin DB AdvantagesAdvantages

SavesspaceSavesspace ReducesreadtimeandwritetimeaslessdataisReducesreadtimeandwritetimeaslessdatais

processedprocessed

Logging consumeslessspaceandtimeLogging consumeslessspaceandtime

DisadvantagesDisadvantages Competeswith other CPU intensive DBMStasks.Competeswith other CPU intensive DBMStasks.

Mayslowdownthe DBMSMayslowdownthe DBMS

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Transaction ManagementTransaction Management Ensureproperties oflocalandglobalEnsureproperties oflocalandglobal

transactionstransactions LocaltransactionLocaltransaction-- Updateaddress book entryinSimputerUpdateaddress book entryinSimputer

GlobaltransactionGlobaltransaction-- Transfermoneyfroma bank accountto anTransfermoneyfroma bank accountto anepurseepurse inasmartcardattachedto aSimputerinasmartcardattachedto aSimputer

IssuesIssues Frequentdisconnections,resource constraints,mobility,loss orFrequentdisconnections,resource constraints,mobility,loss or

damageto handhelddamageto handheld

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SynchronizationSynchronization AccessdataAccessdata AnytimeAnytimeandand AnywhereAnywhereusingthe handheldusingthe handheld

Mobilesalesperson, Wireless ware houseMobilesalesperson, Wireless ware house

ProblemProblem Notpossibleto remain connectedalwaysNotpossibleto remain connectedalways SolutionSolution-- Replicatedatainthe handheldReplicatedatainthe handheld

Downloada copy ofthedatainto the handheldfromDownloada copy ofthedatainto the handheldfromtheremoteserverandprocessitoffline. Periodicallytheremoteserverandprocessitoffline. Periodically

mergethe changes withtheservermergethe changes withtheserver

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ConclusionsConclusions

Handheld DBMStechniqueshaveto considerHandheld DBMStechniqueshaveto considertheresource constraints,mobility,frequenttheresource constraints,mobility,frequentdisconnections,andsecurityaspects ofthedisconnections,andsecurityaspects ofthe

handheldhandheld Thetechniquesusedfor one componentwillThetechniquesusedfor one componentwill

influencethe choice ofthetechniqueusedininfluencethe choice ofthetechniqueusedinanother component. Thereisaverystronganother component. Thereisaverystronginterdependence betweenthe components ofinterdependence betweenthe components ofthehandheld DBMSthehandheld DBMS

Techniquesrejectedforthedisk environmentTechniquesrejectedforthedisk environment

may beexploredinthehandheldenvironmentmay beexploredinthehandheldenvironment