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.

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