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What is Advance Technology (AT)?

Advance Technology (AT): Here, we are going to learn about the Advance Technology, history, advance technology attributes, etc.
Submitted by Anushree Goswami, on January 12, 2021

AT: Advance Technology

AT is an abbreviation of "Advance Technology", it is most usually known as IBM Personal Computer AT, also occasionally called the PC AT or PC/AT. It was IBM's second-generation PC, developed and created around the 6 MHz Intel 80286 microprocessor.

In 1984, it was launched as System Unit 5170.
The foundation model AT computer included a 256 k of RAM and a 1.2 MB floppy disk drive. The AT was also obtainable with 512 k of RAM and a 20 MB disk drive.
In the present, an AT-class system is any computer with a 16-bit, 32-bit, or 64-bit system. Former computers with an 8-bit system were known as PC/XT-class systems.
All new computers used in the present are regarded as AT-class computers.
A PC/XT-class computer can be acknowledged and known if it is using the older 8-bit ISA expansion slot.
The name "Advanced Technology" was preferred for the reason that the AT made available a variety of technologies that were then original in personal computers.
IBM afterward launched an 8 MHz version of the AT.

AT History

In 1984, IBM launched the Personal Computer/AT, which was remarkable for the corporation.
Contrasting, the PCjr and Portable PC, the AT was highly advanced and, at $4,000-6,000, much less costly than the small number of similar, already existing, and access computers.

Advance Technology Attributes

AT bus: The AT motherboard had a 16-bit data bus and a 24-bit address bus (16 MB) that was toward the back well-suited with PC-style expansion cards, which were 8-bit data, 20-bit address.
Fifteen IRQs and seven DMA channels, extended from eight IRQs and four DMA channels for the PC.
16 MB maximum memory for the reason that of the 24-bit address bus.
Battery-backed real-time clock (RTC) on the motherboard with 50 bytes CMOS memory existing for power-off storage of BIOS frameworks.
A disk-based BIOS setup program took the position of the DIP switches on PCs and PC XTs.
20 MB hard disks drive, even though the initial drives created and produced by Computer Memories were very untrustworthy.
ATs could be set with CGA, MDA, EGA, or PGA video cards.
The 8250 UART from the XT was improved and advanced to the 16450,
PC DOS 3.0 was launched to maintain the original AT attributes, comprising preliminary kernel maintenance for networking.