Editing Tandy 1000 (section)

===Design and architecture===
Tandy 1000 computers were some of the first IBM PC clones to incorporate a complete set of basic peripherals on the motherboard using proprietary [[ASIC]]s, the forerunner of the [[chipset]]. Although the original Tandy 1000 comes in an IBM PC-like [[desktop case]], some models, notably the 1000 EX and 1000 HX, use [[home computer|home-computer]]-style cases with the keyboard, motherboard and disk drives in one enclosure. This high level of integration made these machines a cost-effective alternative to larger and more complex IBM PC/XT and PC/AT-type systems, which require multiple add-in cards, often purchased separately, to implement a comparable feature-set to the Tandy 1000.

Being derived from IBM's PCjr architecture, the Tandy 1000 offers several important features that most IBM PC-compatibles of the time lacks, such as the PCjr's sound generator and extended CGA-compatible graphics controller. It also offers multiple built-in I/O ports, including a [[game port]] which was frequently a separate add-on card on non-Tandy machines.

The original line is equipped with the [[Intel 8088]] [[central processing unit|CPU]], which was later extended to faster clock speeds and also the [[Intel 8086|8086]], [[Intel 80286|80286]] and toward the end of the line with the RSX, [[Intel 80386SX|80386SX]] processors. Successors to the 1000 appended two or three letters to the name, after a space (e.g. Tandy 1000 EX and Tandy 1000 HX).  In a few instances, after these letters a slash was appended, followed by either a number or additional letters (e.g. Tandy 1000 TL/2, Tandy 1000 RL/HD).