ISA bus was a standard used for years. It was first 8-bit, being the standard expansion slot for most 8086/8088 motherboards, but later extended to 16-bit, which was the standard for 286, 386, and 486 motherboards. Most standard PC's had ISA slots through the late 1990's. They began to be phased out in the early 2000's, and are now obsolete.
VESA Local bus was an extension of the standard 16-bit ISA bus, and gave a 32-bit expansion slot. These were seen in late 486 and early Pentium motherboards, which would often have two or three VESA Local Bus slots in addition to 16-bit ISA slots. They were short lived, quickly replaced by PCI slots.
PCI was introduced in the mid 1990's, and are still common today. Some late 486 motherboards had two or three PCI slots in addition to 16-bit ISA slots, and they became standard with Pentium systems (most Pentium motherboards, Pentium II motherboards, and some Pentium III motherboards still had some ISA slots in addition to the PCI slots).
MCA was bus developed by IBM and used in their PS/2 systems. It is to buses what Beta is to the VCR: A good technology, but made obsolete because it's developers made it too expensive for other manufacturers to license. MCA offered a 32-bit bus before VESA Local Bus or PCI were available.
mca bus = Micro Channel Architecture was a IBM Standard, proprietary in this case, for 16 to 32 bit buses on their PS/2 Computers. Never widely adopted. isa bus = Industry Standard Architecture bus is available in 8 bit and 16 bit standards and was used for expansion devices on a computer prior to PCI's emergence. eisa bus = Some times called "Enhanced ISA" or "Extended Industry Standard Architecture" was available as an expansion of ISA bus for computers. EISA was backwards compatible with XT or ISA Boards for example. ALso was available up to 32 bit. vesa bus = Video Electronics Standards Association. In this case a VESA local bus is a bus which works along side ISA to provide high-speed access to Memory for Video processing/display. Not commonly used any longer. pci bus = Peripheral Component Interconnect, an expansion port of a more advanced kind then ISA. Faster then all previous buses up to this point. Hope this helps!
They were known as an "expansion bus". So-called because the expansion cards with edge connectors, plugged directy into the bus board. (Today we would call it a motherboard) There were 3 bus standards: Industry Standard Architecture (ISA) Micro Channel Architecture (MCA) Extended Industry Standard (EISA) I hope that helps. Michael Sharp, CEO hostyouridea.com
MCA is a 32 bit expansion bus
MCA
Yes Micro Channel Architecture (MCA) expansion bus slots, were an architecture class of expansion slot as you call it. But their were two other classes of expansion bus in use, namely: ISA and EISA. Please refer to my answer at: http://wiki.answers.com/Q/What_were_expansion_slots_called_during_the_early_PC's Michael Sharp, CEO Hostyouridea.com
Parallel ASUS Media Bus proprietary, used on some ASUS Socket 7 motherboards Computer Automated Measurement and Control (CAMAC) for instrumentation systems Extended ISA or EISA Industry Standard Architecture or ISA Low Pin Count or LPC MBus MicroChannel or MCA Multibus for industrial systems NuBus or IEEE 1196 OPTi local bus used on early Intel 80486 motherboards. Conventional PCI Parallel ATA (aka Advanced Technology Attachment, ATA, PATA, IDE, EIDE, ATAPI, etc.) disk/tape peripheral attachment bus S-100 bus or IEEE 696, used in the Altair and similar microcomputers SBus or IEEE 1496 SS-50 Bus Runway_bus, a proprietary front side CPU bus developed by Hewlett-Packard for use by its PA-RISC microprocessor family GSC/HSC, a proprietary peripheral bus developed by Hewlett-Packard for use by its PA-RISC microprocessor family Precision Bus, a proprietary bus developed by Hewlett-Packard for use by its HP3000 computer family STEbus STD Bus (for STD-80 [8-bit] and STD32 [16-/32-bit]), FAQ Unibus, a proprietary bus developed by Digital Equipment Corporation for their PDP-11 and early VAX computers. Q-Bus, a proprietary bus developed by Digital Equipment Corporation for their PDP and later VAX computers. VESA Local Bus or VLB or VL-bus VMEbus, the VERSAmodule Eurocard bus PC/104 PC/104 Plus PC/104 Express PCI-104 PCIe-104 Zorro II and Zorro III, used in Amiga computer systems Serial 1-Wire HyperTransport I²C PCI Express or PCIe Serial ATA (SATA) Serial Peripheral Interface Bus or SPI bus UNI/O SMBus
MCA
MCA
MCA owned MCA Disco-Vision Incorporated
After bca iam go for mca because mca is the best for next comming year . there are lot of job besd on mca so i gofor mca. and after mca we do self in IT sector
MCA is very useful degree..
Mca