ICT/Computer Studies/IT help HERE only!

[bball92]

implement by:

phased implementation
parallel running
direct changeover

hope that helps =)

[Mastermind]

Thanks bro

[fear_fear]

A HUB is a device which recieves data from one computer in a network and sends it out to all other computers in the network. It is often not used as it decreases the speed of transmission and increase data collision

A Router is a device similar to HUB but it only sends data to the computer its adressed to, therefore decrease data collision and increase speed of transmission

A Bridge is used to seperate 2 networks therefore increase speed of transmisson and decrease data collision

A Switch is a combination of a HUB, Bridge and Repeater

A Repeater gives boost to data to travel further in a network

A modem converts Analogue data to Digital data and Vice-Versa

 

[***-))((-S.U.B-))((-***]

  THNXSKZ EEHEHHEHHEHEHEHHEEE 

[evilzurg307]

I dont understand batch, realtime and online processing at all!

[***-))((-S.U.B-))((-***]

Batch Processing
for eg-

In a bank, all the data is collected during the day and is processed at once during the night and the accounts are updated the next morning.

In online processing:

the data is collected and is processed at the same time and the account is updated instantly.

Real time processing I too dunno  EHEHEHHEHEHEEHH 

[Decipher]

I dont understand batch, realtime and online processing at all!

Batch Processing - Collecting all the source documents and processing them in a batch.

Examples: Payrolls, Utility bills

On-line Processing - Involves the use of a central system or computer to update the information as soon as it originates.

Examples: Airline booking, cinema and theater booking

Real-time processing - Involves a control system which uses a sensor requiring immediate access

Examples: Hospital patients monitoring, rocket fired into space, burglar systems.

[Eamyzz]

can someone please give the exact definaion of online batch and real time processing

look batch processing is wen data is collected in ""batches"" then processied all in one go when there is no1 working on da computers like in payroll systems

realtime processing is wen small errors arent accepted and may cause a lot of damage like in car manufacturing .. robot arms cannot put the nail in another place as a slight delay will ruin da car shape

online processing is wen there is a slight delay while da data entered is being prcessed like in cinema booking systems....there might b a slight delay as da order would b checked wid other ""booking windows"" to ensure that a seat isnt booked twice


i hope that this helped

do u get this 1 or u want me to elaborate it more evilzurg?

[evilzurg307]

Thanks a ton guys!
Now i know the difference between real time and online.

[Eamyzz]

when they say describe the input, output, and processing of this system.what shld b da answer...may u plz answer me ASAP  

[Decipher]

when they say describe the input, output, and processing of this system.what shld b da answer...may u plz answer me ASAP  

Burglar alarm system:

1) Contact sensor(one given example) - detect doors or windows open

when the contact sensor detect changes(Input) in the doors or window it sends this information(process) to the microprocessor to trigger the burglar alarm (Output)

That simple.

[Eamyzz]

when they say describe the input, output, and processing of this system.what shld b da answer...may u plz answer me ASAP  

Burglar alarm system:

1) Contact sensor(one given example) - detect doors or windows open

when the contact sensor detect changes(Input) in the doors or window it sends this information(process) to the microprocessor to switch it on (Output)

That simple.

srry.... i ddnt write da whole Qs.....




A doctor surgery uses an expert system. Describe the input, out......

because i gt it wrong and i donno y ? :-/

[Eamyzz]

when they say describe the input, output, and processing of this system.what shld b da answer...may u plz answer me ASAP  

Burglar alarm system:

1) Contact sensor(one given example) - detect doors or windows open

when the contact sensor detect changes(Input) in the doors or window it sends this information(process) to the microprocessor to switch it on (Output)

That simple.

srry.... i ddnt write da whole Qs.....




A doctor surgery uses an expert system. Describe the input, out......

because i gt it wrong and i donno y ?

Any1 answer plzzzzzzzzzzzzzzzzzzzzzzzzz 

[Eamyzz]

any1 ??



plz answer b4 its tooo l8 



Thanks whoeva +rep me a if it was a   SHE and a hi-five if it was a HE 

[Shogun]

wasn't airline booking real time. i mean i saw it in mark schemes.

and for booking a seat in cinema while purchasing tickets. what type of process is tht?

and from what i understand

batch processing: its where an organisation waits for all inputs to come in and then process them all in once together at a certain date.

eg: 1)like when u get electricity bills every month after all the meter readings (inputs) is collected by the electricty company.
               2)a monthly paid employee gets his payroll done after a month and then gets payment.  


transaction processing: it is same like batch processing except u dont have to wait for a certain period of time to collect all inputs. u can just process any data any time.

      eg: when a monthly paid employee leaves in the middle of the month. so the company does not have to wait till the end of the month for the payroll to be done. the company can just do it rightaway and pay tht certain employee.


real time processing: its like every thing is happening NOW any change made it will show in the screen that change was made. here there is no waiting. this process responds directly to an enquiry. any problem and VOOOM it will try to solve it DIRECTLY.

eg: when u book seats for in a plane and when u choose a seat it will show on the screen tht it is occupied by u.
    suppose another dude attends and says tht he wants the same seat U already booked for. the clerk working there says "oh, sorry sir,this seat was already taken" how does tht happen?,this happens cuz this shows on the screen tht seat  is alraedy taken by u  directly after u booked and took a seat. this is done by real time processing. THE CURRENT SITUATION IS ALWAYS SHOWN.

online processing: now this iam confused with real time processing. i feel tht it needs to be connected to the internet (online) then it carries out process.

so therefore i would like to have a great explaination on online process and its examples.