Editing IBM Personal Computer (section)

==Model line==
{{See also|List of IBM Personal Computer models}}
IBM sold a number of computers under the "Personal Computer" or "PC" name throughout the 1980s. The name was not used for several years before being reused for the [[IBM PC Series]] in the 1990s and early 2000s. The PC line was replaced by the next generation [[IBM PS/2]] in 1987 which introduced new hardware standards incompatible with those previously established by IBM and adopted in the IBM PC compatible industry. The [[IBM PC Series]] returned to the ISA standard hardware and was replaced by the [[IBM NetVista]], which in turn was replaced by [[ThinkCentre]] models in 2003. IBM Personal Systems Group was sold to Lenovo in 2005.

{| class="wikitable sortable"
|+The IBM PC line
|-
! Model name!!Model #!!Introduced!!Discontinued!!CPU!! style="text-align:left;" |Features
|-
| PC||5150||August 1981||April 1987||[[Intel 8088|8088]]|| align="left" |[[Floppy disk]] or [[Compact Cassette|cassette]] system.<ref>IBM did not offer own brand cassette recorders, but the 5150 had a cassette player jack, and IBM anticipated that entry-level home users would connect their own [[Compact Cassette#Data recording|cassette recorders for data storage]] instead of using the more expensive [[floppy drive]]s (and use their existing [[TV set]]s as monitors); to this end, IBM initially offered the 5150 in a basic configuration without any floppy drives or monitor at the price of $1,565, whereas they offered a system with a monitor and single floppy drive for an initial $3,005. Few if any users however bought IBM 5150 PCs without floppy drives.</ref> One or two internal floppy drives were optional.
|-
|[[IBM Personal Computer XT|XT]]||5160||March 1983||April 1987||8088|| align="left" |First IBM PC to come with an internal hard drive as standard.
|-
| XT/370||5160||October 1983||April 1987||8088|| align="left" |[[PC-based IBM-compatible mainframes|5160 with XT/370 Option Kit and 3277 Emulation Adapter]].
|-
|[[IBM 3270 PC|3270 PC]]||5271||October 1983||April 1987||8088|| align="left" |With [[3270 terminal]] emulation, 20 function key keyboard
|-
|[[IBM PCjr|PCjr]]||4860||November 1983||March 1985||8088|| align="left" |Floppy-based home computer, but also used ROM cartridges; [[infrared]] keyboard.
|-
|[[IBM Portable Personal Computer|Portable]]||5155||February 1984||April 1986||8088|| align="left" |Floppy-based portable
|-
|[[IBM Personal Computer/AT|AT]]||5170||August 1984||April 1987||[[Intel 80286|80286]]|| align="left" |Faster processor with 24-bit address expands RAM capacity to 16 MB., faster 16 bit system bus (6&nbsp;MHz, later 8&nbsp;MHz, vs 4.77&nbsp;MHz), [[jumperless]] configuration, [[real-time clock]].
|-
| AT/370||5170||October 1984||April 1987||80286|| align="left" |[[PC-based IBM-compatible mainframes|5170 with AT/370 Option Kit and 3277 Emulation Adapter]].
|-
| 3270 AT||5281||June 1985<ref>Scott Mueller, ''Upgrading and Repairing PCs, 2nd Ed'', Que Books 1992,{{ISBN|0-88022-856-3}}, page 94</ref>||April 1987||80286|| align="left" |With [[3270 terminal]] emulation.
|-
|[[IBM PC Convertible|Convertible]]||5140||April 1986||August 1989||80C88|| align="left" |[[Microfloppy]] [[laptop]] portable
|-
| XT 286||5162||September 1986||April 1987||80286|| align="left" |Slow hard disk, but zero [[wait state]] memory on the [[motherboard]]. This 6&nbsp;MHz model is faster than the 8&nbsp;MHz AT models (when using planar memory) because of its zero wait state memory.
|}

As with all PC-derived systems, all IBM PC models are nominally [[software]]-compatible, although some timing-sensitive software will not run correctly on models with faster CPUs.