Digital Electronics and Computer Organization Unit-IV

These flashcards cover essential vocabulary concepts related to Digital Electronics and Computer Organization, focusing on I/O devices and data transfer schemes.

I/O Interface

The method by which information is transferred between internal storage and external I/O devices.

Peripheral Devices

Devices connected internally or externally to a computer, used for data transfer.

Programmed Data Transfer Scheme

Data transfer between the CPU and I/O devices controlled by a program in memory.

Direct Memory Access (DMA)

Data transfer from memory to I/O devices without involving the microprocessor.

ASCII

American Standard Code for Information Interchange, a standard binary code used to represent alphanumeric characters.

Impact Printer

A type of printer that prints characters by striking the paper physically.

Non-Impact Printer

A printer that does not require physical contact to print, such as laser printers.

Interrupt Service Routine (ISR)

A special routine executed by the computer to service an interrupt event.

Maskable Interrupt

A hardware interrupt that can be ignored by the processor.

Non-Maskable Interrupt

A hardware interrupt that cannot be ignored, typically used for critical errors.