Banking Application, Expert System, Library System

Banking Application

The use of computer technology has been better and better, now we are going to learn about it.

ATM: Allows almost anywhere access to your money; transfer, check balance, take money, change

ATM or automatic teller machine is the machine where people can do transaction with money or even can take money out from it.

Library system: it is used in the library to keep check on the records of who borrowed the book and what book is borrowed everyday.It is also used in the library to keep check on the records of who borrowed the book and what book is borrowed everyday.This system makes the librarian easier to do his work rather than recording it in a book. This system needs a barcode so that it can just be scan by a scanner like in the supermarket.

The expert system

It is developed to mimic the expertise and knowledge of an

diagnosing a person’s illness

[1] diagnostics (finding faults in a car engine, finding faults on a circuit board, etc.)

[1] prospecting for oil and minerals

[1] tax and financial calculations

[1] chess games

[1] identification of plants, animals and chemical compounds

[1] road scheduling for delivery vehicles.

Knowledge Base = a database that  allow complex storage and retrieval requirements of the management system

 Rule Base = It is similar to a 'Setting' option of an application

Inference Base = It is like a rule base, but focuses more to the system and not how the program looks like. It is also a type of a reasoning engine

How to set up an expert system:

Experts in the field are interviewed to find out what is needed in the expert

system.

Data is then collected from these experts.

A knowledge base (defined below) is designed and then created.

The rules base (defined below) is designed and created.

An inference engine (defined below) is designed and created.

The input screen and output format are also designed and created – this is

known as the user interface.

The expert system is tested against known conditions and scenarios.

It is also checked to see if it meets the original specification.

Experts are interviewed about how effective it is before the expert system goes

out on general release.

Advantages

Expert systems provide consistent answers.

They never ‘forget’ to answer a question when determining the logic.

Using expert systems reduces the time taken to solve a problem.

A less skilled work force is needed, which gives the potential of saving money,

but also allows areas of the world access to expertise which they could not

normally afford.

Disadvantages

They tend to lack common sense in some of the decision-making processes.

Errors in the knowledge base can lead to incorrect decisions being made.

It can be expensive to set up in the first place.

Considerable training is necessary to ensure the system is used correctly by the

operators.

•Chip and Pin: to ensure higher security rather than signatures, every chip and pin is different, a magnetic strip of your card has a unique pin which has been registered to your account or balance, it can also be used to pay in restaurants and shops. 

Tuck Shop model, Traffic light simulation, Architectural simulation, Types of processing

Tuck Shop

A program that’s stores information/records in a spreadsheet (Similar to Microsoft Excel) for a period of time. It could also change a data if the data changes in real life. EX. A supermarket, a school supply shop, etc

Traffic Light simulator

It simulate a scenario about traffic light. It simulate with the data gather, either manually or by a computer.

Information gathers:

·        How many cars pass in a weekday, weekend or holiday.

·        Direction cars go to

·        Time taking for a average car to finish the junction

·        Time taken for the slowest car

·        How pedestrian crossing over effect the traffic

The profit for this is      :

ü No risk when trying out scenario

ü Testing all scenario takes less time

ü Expenses for testing the scenario is cheaper

Simulations are used because it is less expensive than building the real thing.

Architectural simulation

Architectural simulation is a simulation on buildings. This is to test if the building could hold and what is its limitation. The information needed is basic physics and what material will the building use.

Just like the traffic light simulation, it is safer, cheaper and faster if you simulate this than testing it in real life. It could even simulate if the building will get damaged in certain weather.

 3 Types of Processing:

1.   Batch processing

2.   Real Time(transaction) or online processing

3.   Real time process control

Batch processing is the execution of a series of programs on a computer without manual intervention. It is often use in Banks, Billing System and Payroll system. It doesn't need to update manually, it will update automatically, when the system is less busy (e.g. overnight when people are less active). It will update  its main server and it will do it frequently.

Real-Time (Transaction) or online processing

It is an example of Online processing, and it could be used in Theatre, ATM, flight and etc. Unlike the Batch processing, this will have to be faster, to prevent 'double booking'. It will update as fast as possible to its main server. This process has a time lag and isn't instantly updated

Real-Time Process Control

Real-time Process Control is instant process. There is no time lag. It is also an example of online processing. It is used in games, where is needs no lag when playing. It is also used when measuring physical quantities.

Batch Processing applications,Automatic stock control, online booking system

Batch Processing applications

Batch Processing

·         Use to process a lot of data and a fast response time

·         No data is processed until a complete batch has been put together

·    

Three types of transaction:

1. ·         Add
2. ·         Delete
3. ·         Update

Before process

·         Validating = each transaction is check again

·         Sorting = sort using a primary key

Advantage

·         Cheaper and easier real-time system

·         It is automatically, when it is less busy.

Disadvantage

·         The time lag is not so fast when updating

·         A delay when processing before work and when the output is obtained

Payroll System:

Payroll system is an application that are used to count the wages of every employees at the end of the week or month and also to print it using the information in its server.

Input : First it reads the detail of the Employees, the time that the employees worked and any overtime duration

Process:  gross pay, any deduction (e.g Tax) , etc

Output : Print the Slip(Check), update the file, Transfer money to the Bank account of the employees if they have Bank account

Billing systems

Companies send their bill on a pre-determined date, so that theyu send their bills in one batch.

Inputs: customer details (address), charge per kW (unit) of power, previous readings, new readings taken from the electricity meter, bank account details.

Process: the process is done by the calculation of number of units of electricity used, customer’s cost, monthly payments made (if using direct debit), outstanding amount owed or carried in the next bill.

Outputs: bill showing all the details, updating of customer file, production of request for payment if not done through direct debit

Automatic Stock Control

 Automatic uses a Barcode. With this the identification of the item will be faster in the cashier with a barcode reader. Barcodes are made up of alternating dark and light lines of varying thickness barcode usually consists of four parts: country code, manufacturer’s code, product code and a check digit.check digit is a form of validation which is used to make sure no errors occurred during the reading of the barcode.

Here is the example of a barcode reading:

  1    3    5    7    9    11      odd digit position

  4 7 2 8 4 6 9 3 2 2 1

     2    4    6    8   10           even digit position

even numbers: 7,8,6,3,2

odd numbers:4,2,4,9,2,1

Add together the digits in the odd positions and multiply the sum by 3:

(4+2+4+9+2+1) times 3 = 22 x 3 =66

Add together the digits in the even positions:

7+8+6+3+2= 26

Add the two results together: 66+26= 92 

To find the check digit, calculate what needs to be added to 92 to make the next

multiple of 10 i.e. 100

.Hence the final code is 4 7 2 8 4 6 9 3 2 2 1 8

Barcodes are used in the following applications:

1. library book systems 
2. administration systems 
3. passport and ID card systems
4. some burglar alarm systems
5. equipment checking systems 
6. automatic stock control systems 

·       Stock control system are   system that monitor the item in stock, to know if it is too much or too little to all items

·         It works just like Microsoft Excel (spreadsheet)

·         Example: for stores

·         When a item is added or taken, the system will record it

·         The system will check if the item is less than the quantity that the market needs.

Advantage:

·         Make updating easier

·         Instant feedback

·         Sales are shown

·         Re ordering can quickly be done

Disadvantage:

·         Complicated

·         Expensive

·         Staff training

·         If the system broke, the whole place will be confused

·         Need backup plans

·         Staff needs to remember to update

Online booking

·         Website

·         Example is booking flight

·         In the website, you can see the flight available

·         You can book seats/rooms in the form from the website

·         The details will transferred to the central database, which will be update

·         It uses real-time transaction processing so that if the seat is taken it will give the information that the seat is not available anymore

·         They have strict changes so only one person can change it.

Advantage:

·         Save time

·         Saves money (in transport), by not going to the place where we need to buy the ticket we can save fuels and money

·         Easier

Disadvantage:

·         By fake website, our personal info can be stolen

·         It is hard for the one that can’t use the internet

·         Hard for someone that doesn’t have any gadget or PC

Turtle Graphics, Robotics

Turtle Graphics

What is it?

A method of programming specifically designed for children to do some basic programming

A method of programming

By controlling the movement of the ‘turtle’ on the screen by typing key instruction for it to move

What does it affect in everyday life?

It is used to carry out drawing functions for Programming the graphics by drawing.

What’s the profit and lost when using it?

Application using sensor

What does it affect in everyday life?

Monitoring: Burglar alarm system

fingerprint-based attendance management system

Record in the data will be accurate and more secure (updates the data overnight)

 Controlling:  Greenhouse Environment

                        To control its environment.

What’s the profit and lost?

Monitoring   : Lost: Expensive, May break down, easily set or hacked and can cause problems

Profit: Efficient, Accurate, Can be taken more frequent, Updates automatically, and keeps data safe

Controlling   : Profit: Safer, Direct response, Accurate

How does the sensor affect the control?

Monitoring: collects data and updates the files or data. It will give notice but does not result changes.

Controlling: reviews the data from the sensors. It will give notice and automatically changes the process

Sensor Lens or Light, how does it work?

Light:  image control street light control: it computes the amount of vehicles in a street. If there’s snow on the street, it will be dimmer because ice can reflect the light.

Photocells: light can be controlled by photocells. These are light-sensitive sensors that responds to the amount of light detected.

Example : Washing Machine

It has the sensor to detect how much time is needed to dry the clothes

 Robotics

Robotics is a computer science

One of the ways ICT is used.

It is used in manufacturing

The profit and lost when it uses ICT

Profit : Efficient, doesn’t need wages, Higher productivity, don’t have any feelings, Can work in a harmful environment

Lost    : Difficult to do ‘unusual task’, Replace skilled labour, risk of de-skilling, Factories can be moved, Causing unemployment

Programs

Tuck shop

this uses a kind of spread sheet which is usually used to keep records like in markets, this is similar to "microsoft excel".

Online Transaction Processing

is a class of information systems that facilitate and manage transaction-oriented applications, typically for data entry and retrieval transaction processing. One of the example is “Real-time (transaction) processing.

Real-Time (Transaction) Processing

Database transactions ensure that real-time updates (works directly) can be reliably executed without data loss, doubled data, confusion or corruption. Even in analytical applications, transactions are important because they guarantee that the data and secondary indexes are updated atomically. Can be used in ATM.

How Does ATM (Automated Teller Machine) work?

Any ATM machine needs a data terminal with two inputs and four output devices. Of course, for this to happen there should also be the availability of a host processor. The host processor is necessary.

Real Time Process Control

process every data needed directly and rapidly, one of the example is the processor on computers or gadgets.

Traffic Light Simulation

used in traffic light for controlling the duration for each light and collects data such as number of vehicles or time of day.

Architectual Simulation

It simulates the architectual building to see any parts of the building that needs to be checked, this saves cost by no need to rebuild any wrong parts.

Batch processing

Collects, updates, and processes data-process all at once, this is usually done in the markets.

safety aspects in the office

Safety issues are an important topic in today's workplace, especially with the rise in accidents in places of work and business. Accidents may often be small, but they can also lead to life-altering results such as mutilation and even death.




These are the safety issues:

Falls

Anything above shoulder level should be retrieved with the use of a step stool or ladder.

Step stools and ladders should only be used if they are in good condition without any broken rungs or legs and without being wobbly.

Chairs should always be used flat on the floor and not leaning back. Chairs with a "leaning" feature shouldn't be pushed beyond their limit which may result in over-balancing.

Chairs and boxes should never replace ladders or step stools

Pathways should be kept clear

Electrical cords and wires must be kept out of pathways

When seated, excessive twisting, leaning back, and bending over should be avoided.

Filing Cabinets and Bookshelves

When filling drawers or shelves, always fill from the bottom, up, allowing the weight to keep it from tipping over

When finished with drawers or doors, make sure to close them

properly to prevent bumps and tripping. Open only one drawer or door at a time.

Filing cabinets should be placed in low-traffic areas.

Any cabinets or bookcases over sixty four inches high should be secured to the wall to prevent tipping.

General Safety Issue Practices

Keep the work environment clean. Throw away trash and empty the cans often, and keep floors free of obstacles and unnecessary items.

Spills should be cleaned immediately to avoid slips.

Immediately report any defects in the workspace such as loose tiles, broken railings, broken doors, broken steps etc.

Refrain from participating in any form of horseplay.

Keep sharp objects such as scissors, tacks, and razor blades in closed containers.

Use the right tool for the job.

Any neckties, long hair, jewelry, and other loose clothing should be kept well clear of any moving machinery parts.

Air vents and air registered should be kept unobstructed.

Furniture, equipment, or other materials should not be positioned in a way that they obstruct air movement or thermostats.

Any pest control related problems should be reported immediately.

Pest control chemicals should be used only by experts.

Guard or tape any furniture corners or edges that are sharp. Any "pull out" keyboard or writing drawers should be pushed back in when not being used.

Printer Issues to human being

Printer Issues to human being 

Some of the issues are:

1. Ozone Gas
2. Noise
3. Ultra violet
4. Toner
5. Heat

Ozone Gas

Ozone Gas is a kind of unstable oxygen that can produced when we operate electronics with a high voltage.Ozone Gas is a reactive gas and extremely poisonous.

Cause: If you inhale it in a long period of time it will cause damage to your lungs.

Solution: Choose a printer that produces low level of ozone gas and completed by carbon filter that is attached on the exhaust of the machine.

Noise

         The loud noise of printer can effect the human nerve, that can cause pain and we’ll  feel exhausted.The maximum limit of noise at work is more or less 8 hours with 80dB.

Cause:  effects the human nerve, that can cause pain 

Solution: Place the machine in a place that will minimize the noise or you can also choose a printer that is completed with noise absorbent.

Ultra Violet



The light that is used to print can cause pressure to the eyes if on going repeatedly 

Cause:

1.             pressure to the eyes if on going repeatedly 
2.             irritation to the eyes and headaches

Solution: Don’t open the cover of the printer

Toner

Toner is the ink used by laser printer. Toner contains a compound called carbon black. Carbon black is carcinogenic to human

Cause: irritate your respiratory system causing you to sneeze and cough

Solution:We can prevent this from happening by keeping the toner inside the cartridge at all times

 Heat

If the ventilation and distribution of heat is not precise, it can increase the room temperature 

Cause: combustion if the paper gets stuck

Solution: You need to make sure the ventilation is proper and the heat can escape from the room

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