The first IBM PC did not have any.
The first IBM PC did not have any.
The correct option is E Disk drive
The first IBM PC did not
have any disk drive.
The "IBM Personal Computer/AT"
(model 5170), announced August 15, 1984, used an Intel 80286 processor,
originally running at 6 MHz. It had a 16-bit ISA bus and 20 MB hard drive. A
faster model, running at 8 MHz and sporting a 30-megabyte hard disk was
introduced in 1986.
The AT was designed to
support multitasking; the new SysRq (system request) key, little noted and
often overlooked, is part of this design, as is the 80286 itself, the first
Intel 16-bit processor with multitasking features (i.e. the 80286 protected
mode). IBM made some attempt at marketing the AT as a multi-user machine, but
it sold mainly as a faster PC for power users. For the most part, IBM PC/ATs
were used as more powerful DOS (single-tasking) personal computers, in the
literal sense of the PC name. Early PC/ATs were plagued with reliability
problems, in part because of some software and hardware incompatibilities, but
mostly related to the internal 20 MB hard disk, and High Density Floppy Disk
Drive.
The first IBM PC did not have any disk drive.
The "IBM Personal Computer/AT" (model 5170), announced August 15, 1984, used an Intel 80286 processor, originally running at 6 MHz. It had a 16-bit ISA bus and 20 MB hard drive. A faster model, running at 8 MHz and sporting a 30-megabyte hard disk was introduced in 1986.
The AT was designed to support multitasking; the new SysRq (system request) key, little noted and often overlooked, is part of this design, as is the 80286 itself, the first Intel 16-bit processor with multitasking features (i.e. the 80286 protected mode). IBM made some attempt at marketing the AT as a multi-user machine, but it sold mainly as a faster PC for power users. For the most part, IBM PC/ATs were used as more powerful DOS (single-tasking) personal computers, in the literal sense of the PC name. Early PC/ATs were plagued with reliability problems, in part because of some software and hardware incompatibilities, but mostly related to the internal 20 MB hard disk, and High Density Floppy Disk Drive.
