ISA - Industrial Standard Architecture
MCA - Micro channel Architecture (Created by IBM)
EISA - Enhanced Standard Architecture
1. Has a clock speed limit of 8 MHz
2. Has a word length of 8 or 16 bits (8 or 16 data lines)
3. Requires two clock ticks to transfer data (16 bit transfers)
4. Very slow for high performance disk accesses and high performance
video cards
1. Has a clock speed of 8.33 MHz
2. Maximum of a 32-bit wide word length(32 data lines)
3. Can support lots of devices
4. Supports older devices which have Slower or Smaller word lengths(ISA)
5. Transfers data every clock tick.
1. Has a clock speed of 10 MHz
2. Has a 32 bit word length (32 data lines)
3. Transfers data every clock tick