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hardware

Automatic Teller Machines (ATM)

An ATM (Automatic Teller Machine) is a customised computer that allows a bank account user to handle his or her cash more easily. It enables users to check account balances, make cash withdrawals or deposits, print a record of account activity or transactions, and even buy stamps. The way an ATM collects information starts when the card is swiped or pressed against the card reader, which records your account information and sends it to the host processor (server). This data is then used by the host processor to obtain information from the cardholders.

Radio Frequency Identification (RFID) tags

RFID stands for Radio Frequency Identification and refers to a wireless technology that consists of two parts: tags and readers. The reader is a device that emits radio waves and receives signals from the RFID tag through one or more antennas. Tags can be passive or active, communicating their identification and other information to nearby readers through radio waves.

The YouTube video below is (hopefully) going to start at 26:40, where Richard Hammond starts to discuss RFID and its use at Hong Kong International Airport. If it doesn't start at 26:40, please forward to that, or enjoy the first half of the video, although it's not completely relevant!

collection from forms

- Be consistent with other forms, such as circular radio buttons.

- It must be readable (fonts, alignment of fields, bold text for emphasis)

- There should be some white space (to imply grouping and rest the eyes)

screen design for on-line data collection

- Make it clear which functions are available (users like to explore all possibilities with new software)

- Actions should be given feedback (users may reinitiate the task in the belief nothing has happened)

- Before any harmful modifications are implemented, warning messages must appear.

web forms for transaction processing (real time and batch)

Real time- In a real-time processing system, transactions are processed in real time as they happen, with no need to wait for them to aggregate. Online transaction processing, or OLTP, is another term for real-time processing. In this circumstance, the system's records always reflect the present situation.

Batch- Transactions are aggregated over time and processed as a single unit, or batch, in a batch processing system. A business, for example, may update its sales data every day after it closes. Alternatively, a payroll system might analyse all time cards every two weeks in order to calculate employee wages and generate paychecks. In a batch system, there is a time delay between the actual occurrence and the processing of the transaction to update the organization's data, regardless of the time period.

analysing data

in which output from transaction processing is input to different types of information systems, such as:

decision support

management information systems

data warehousing systems (for data mining)

enterprise systems