IBM PC AT. ("Advanced Technology") A version of the {IBM PC}, released in Aug 1984 with an {Intel 80286} processor, a 16-bit {bus}, a medium-speed {hard disk} and a 1.2 {megabyte} {floppy} {disk drive}. It had a larger case than the PC, which allowed it to accept "{tall cards}". The AT keyboard corrected the PC's non-standard placement of the {return} and left shift keys but shortened the {backspace} key, making it harder to reach. (1995-03-01) (1995-07-30) i18n. {internationalisation} I2O. {Intelligent Input/Output} i386. {Intel 80386} i486. {Intel 486} i487. {Intel 487SX} i860. A 32/64-bit {superscalar} {RISC} {microprocessor} from {Intel}, released in 1989. Originally codenamed "N10". It has a 32-bit integer {ALU} and a 64-bit {floating-point unit}. It has a 64-bit {data bus} with an initialisation mode which only uses eight bits of the data bus to allow the use of a small {boot ROM}. It has a 32-bit wide {instruction cache} and a separate 64-bit wide {data cache}. It uses {register scoreboarding} and {register bypassing}. The {clock rate} is 33 MHz with a clock-doubled version available. (1998-03-28) IA. {Information Appliance} IAB. {Internet Architecture Board} IAD. A dynamic analyser from {IBM} giving information on run-time performance and code use.
