What is expanded memory from the IBM PC era?
In DOS memory management, expanded memory is a system of bank switching that provided additional memory to DOS programs beyond the limit of conventional memory (640 KiB). Expanded memory is an umbrella term for several incompatible technology variants.
What is the current bus architecture used for expansion slots?
Peripheral Component Interconnect (PCI)
Peripheral Component Interconnect (PCI) is one of the latest developments in bus architecture and is the current standard for PC expansion cards.
How many expansion slots are there in ISA bus architecture?
The 16-bit ISA bus was also used with 32-bit processors for several years. An attempt to extend it to 32 bits, called Extended Industry Standard Architecture (EISA), was not very successful, however….
| Industry Standard Architecture | |
|---|---|
| One 8-bit and five 16-bit ISA slots on a motherboard | |
| External interface | no |
Which bus is used for IBM PC?
Industrial Standard Architecture
The ISA (Industrial Standard Architecture) bus is commonly used in IBM-PC compatibles and is one of the most widely-used system busses. The PCI (Peripheral Component Interconnect) bus is a flexible high-performance peripheral bus that can ef- ficiently interconnect peripherals and processors of widely different speeds.
What does ISA bus stand for?
Industry Standard Architecture bus
A. I. S. (Industry Standard Architecture bus) An earlier hardware interface for connecting peripheral devices in PCs. Pronounced “eye-suh,” ISA accepted cards for sound, display, hard drives and other devices.
Which is unidirectional bus?
The address bus is unidirectional . Data bus – carries the data between the processor and other components. The data bus is bidirectional . Control bus – carries control signals from the processor to other components.