Editing TRS-80 Model 100 (section)

== Peers and successors ==
[[File:Tandy Model 200 (1).jpg|thumb|Tandy Model 200]]
{{anchor|tandy200}}

[[Image:Tandy 102 and 200.jpg|thumb|right|A Tandy 102 portable and Tandy 200 laptop]]
The '''Tandy 200'''<ref>{{cite web|title=Radio Shack Computer Catalog RSC-15, page 51|url=http://www.radioshackcatalogs.com/html/catalogs_extra/1986_rsc-15/h051.html|website=Radio Shack Catalogs dot com|publisher=Tandy/Radio Shack|access-date=April 11, 2017|archive-date=November 7, 2013|archive-url=https://web.archive.org/web/20131107201510/http://www.radioshackcatalogs.com/html/catalogs_extra/1986_rsc-15/h051.html|url-status=live}}</ref><ref>{{cite web |title=A Star is Born, Tandy advertisement in 80 Micro magazine, April 1985 |url=https://archive.org/details/80_Micro_1985-04_CW_Communications_US/page/n1/mode/2up |website=www.archive dot org |date=April 1985 |publisher=Tandy Corp. |access-date=July 9, 2020}}</ref> was introduced in 1984 as a more capable sister product of the Model 100. The Tandy 200 has a flip-up 16 line by 40 column display and came with 24&nbsp;KB RAM which can be expanded to 72&nbsp;KB (3 banks of 24&nbsp;KB).  Rather than the "button" style keys of the Model 100, its four arrow keys are a cluster of keys of the same size and shape as those comprising the keyboard, though the function and command "keys" are still of the button type.  The Tandy 200 includes [[Multiplan]], a spreadsheet application. It also added [[DTMF]] tone dialing for the internal modem, whereas the Model 100 only supports [[pulse dialing]].  On a phone line that doesn't support pulse dialing, users may dial manually using a touch-tone phone and then put the Model 100 online.

{{anchor|tandy600}}
The last new model that could be considered part of this line was the '''Tandy 600''',<ref>{{cite web |last1=Dixon |first1=Bradford N. |title=Tandy's Model 600, 80 Micro magazine, March 1986, page 28 |url=https://archive.org/details/80-microcomputing-magazine-1986-03/page/n27/mode/2up |website=www.archive dot org |date=March 1986 |publisher=CW Communications |access-date=July 9, 2020}}</ref><ref>{{cite web |title=Tandy advertisement for Model 600 |url=https://archive.org/details/80-microcomputing-magazine-1986-03/page/n1/mode/2up |website=www.archive dot org |date=March 1986 |publisher=Tandy Corp. |access-date=July 9, 2020}}</ref> introduced in October 1985.  Similar to the Tandy 200, it features a flip-up screen, but with 80 columns rather than 40.  Built-in features include a 3.5" diskette drive, rechargeable batteries, and 32K of RAM expandable to 224K.  The underlying software platform was Microsoft's 16-bit Hand Held Operating System (Handheld DOS or HHDOS), along with word processing, calendar, database, communication and spreadsheet software.  Unlike earlier models, BASIC was an extra-cost option rather than built in.<ref>{{cite web
 |url         = http://www.digitaldinos.com/DigitalDinos/Pages/Information/docT600FAQ30.html
 |title       = The Tandy 600 FAQ - Version 3
 |access-date  = February 22, 2009
 |date        = May 26, 2008
 |publisher   = DigitalDinos
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20081013022511/http://www.digitaldinos.com/DigitalDinos/Pages/Information/docT600FAQ30.html
 |archive-date = October 13, 2008
 |df          = mdy-all
}}</ref>

{{anchor|tandy102}}
The last refresh to the product line was the '''Tandy 102''', introduced in 1986 as a direct replacement for the Model 100, having the same software, keyboard, and screen, and a nearly identical, but thinner, [[form factor (design)|form factor]] that weighed about one pound less than the Model 100. This reduction in size and weight was made possible by the substitution of surface-mount chip packaging.  Standard memory for the Model 102, 24K RAM, was upgradable to 32K with an ordinary 8K SRAM chip.

{{anchor|tandylt1400}}
Later portables from Tandy no longer featured a ROM-based software environment, starting with the [[Tandy 1400LT]], which ran a diskette-based [[MS-DOS]] operating system in 768&nbsp;KB of RAM, utilising two built-in 3.5" floppy drives. This model resembled the [[IBM PC Convertible]] with a "clamshell" design and had a screen supporting a textual display of {{nowrap|80 x 25}} characters and a graphical resolution of {{nowrap|640 x 200}} pixels, with eight intensity levels achieved using a form of [[pulse-width modulation]].<ref name="byte198710"/>

{{anchor|tandywp2}}
Tandy also released similar word processing portables for the education market based on a Z80-compatible CPU: the '''Tandy WP-2''' in 1989 equipped with 32&nbsp;KB of RAM and 256&nbsp;KB of ROM containing the application software,<ref name="tandy_wp2_service">{{ cite book | url=https://archive.org/details/Tandy_WP-2_Portable_Wordprocessor_Service_Manual_1989_Tandy/mode/2up | title=Tandy® WP-2 Portable Wordprocessor | publisher=Tandy Corporation | date=1989 | access-date=16 April 2022 }}</ref> and the '''Tandy WP-3''' in 1993 equipped with 64&nbsp;KB of RAM.<ref name="pcw199307_tandy">{{ cite magazine | title=Mitac and Tandy do palmtop deals | magazine=Personal Computer World | date=July 1993 | pages=199 }}</ref> The WP-2 provided serial and parallel interfaces, a cassette recorder port, an expansion card slot for 32&nbsp;KB of non-volatile RAM, and an internal 32&nbsp;KB RAM expansion slot. A disk drive was also available, connected via the serial port.<ref name="tandy_wp2_owner">{{ cite book | url=https://archive.org/details/WP-2_Portable_Word_Processor_Owners_Manual_1987_Tandy/page/n78/mode/1up | title=WP-2 Portable Wordprocessor Owner's Manual | publisher=Tandy Corporation | date=1987 | access-date=16 April 2022 | pages=143–145 }}</ref> In 1993, Tandy also announced the '''Tandy PPC-10''' pocket PC, based on an [[Intel_8086#Chip_versions|80C86]]-compatible CPU and having 1&nbsp;MB of RAM, bundled with MS-DOS 5.0, [[Microsoft Works]] 2.0, PC link and personal information management software, also featuring two [[PCMCIA]] slots.<ref name="pcw199307_tandy"/>

=== Similar computers from other companies ===
[[Image:NEC PC-8201 001 JPN.jpg|thumb|NEC PC-8201]]
[[File:TI Compact Computer 40 White Background.jpg|thumb|TI [[Compact Computer 40]]]]
[[File:Epson-hx-20.jpg|thumb|[[Epson HX-20]] ]]
[[File:Canon X-07.jpg|thumb|[[Canon X-07]]]]
The Olivetti M10, NEC PC-8201 and NEC PC-8300 were built on the same platform as the original Kyocera design, although the Olivetti M10 had a display that could be tilted towards the user.<ref name="design198403_portables">{{ cite magazine | url=https://archive.org/details/sim_design_1984-03_423/page/n49/mode/2up | title=Portable computers, a buyers' guide | magazine=Design | date=March 1984 | access-date=15 March 2022 | last1=Aartsen | first1=Menno | pages=48–57 }}</ref>{{rp|pages=53|quote=Battery-powered with lc display; by the same manufacturer as the Tandy and NEC portables. The keyboard and the housing are redesigned, and the display tilts to face the user.}} The earlier and smaller [[Epson HX-20]] of 1982 used a much smaller LCD display, four lines of twenty characters, and had an internal cassette tape drive for program and file storage. There were several other "calculator-style" computers available at the time, including the [[Casio]] FP-200, the [[Compact Computer 40]], and the [[Canon X-07]].<ref>{{Cite web|url=https://www.atarimagazines.com/creative/v10n1/38_14_notebook_computers_in_.php|title=14 notebook computers in brief.|website=www.atarimagazines.com|access-date=July 1, 2024|archive-date=March 25, 2024|archive-url=https://web.archive.org/web/20240325183342/https://www.atarimagazines.com/creative/v10n1/38_14_notebook_computers_in_.php|url-status=live}}</ref>
[[File:GRiD Compass 1101 (1).jpg|thumb|[[Grid Compass 1100|GRiD Compass 1101]]]]
[[File:MicroOffice RoadRunner open.jpg|thumb|[[MicroOffice RoadRunner]]]]
Systems of about the same size and form-factor as the Model 100, aimed at journalists, were sold by companies such as [[Teleram]], as the Teleram T-3000<ref>{{Cite web|url=http://www.vintagecomputer.net/laptops.cfm|title=VintageComputer.net - Laptops and Portables, and Guns|website=www.vintagecomputer.net|access-date=October 23, 2010|archive-date=January 20, 2011|archive-url=https://web.archive.org/web/20110120213546/http://www.vintagecomputer.net/laptops.cfm|url-status=live}}</ref> and [[GRiD Systems]], as the [[Grid Compass|GRiD Compass]], which was used by NASA. GRiD was later acquired by Tandy. The [[Bondwell 2]] of 1985 was a [[CP/M]] laptop in a similar form factor to the Model 200. Both [[Convergent Technologies]] and MicroOffice released the WorkSlate and the [[MicroOffice RoadRunner|RoadRunner]] respectively in late 1983, which similarly targeted mobile computing.<ref name=ps>{{cite journal | last=McComb | first=Gordon | date=September 1984 | url=https://books.google.com/books?id=BMgQSOX5PfQC&pg=PA81 | title=''PS'' guide to 75 new portables | journal=Popular Science | publisher=Times Mirror Magazines | volume=225 | issue=3 | pages=76–81 | via=Google Books}}</ref>
[[File:Cambridge-Z88.jpg|thumb|[[Cambridge Z88]]]]
[[File:Amstrad-nc100.jpg|thumb|[[Amstrad NC100]]]]
Computers from two other British companies were similar in form and functionality to the Model 100 and its successors. The [[Cambridge Z88]] of 1987, developed by British inventor Sir [[Clive Sinclair]], had greater expansion capacity due to its built-in cartridge slots. It had a far more sophisticated operating system called OZ that could run multiple applications in a task-switched environment. The firmware contained a powerful application called Pipedream that was a spreadsheet that could also serve capably as a word processor and database. In comparison, the Tandy WP-2 was regarded in one review as "easier to use and sturdier than the Z88" with a "proper keyboard" as opposed to the Z88's "rubber membrane keyboard". Moreover, the WP-2 also included a 100,000-word spellchecking dictionary and 200,000-word thesaurus, making the Tandy product more compelling as a dedicated word processor.<ref name="newcomputerexpress19900915_tandy_wp2">{{ cite magazine | url=https://archive.org/details/NH2021_New_Computer_Express_Issue097.pdf/page/n13/mode/2up | title=The Best Budget Laptop? | magazine=New Computer Express | date=15 September 1990 | access-date=16 April 2022 | pages=14–15 }}</ref> The other British computers were the [[Amstrad NC100]] and NC200, produced from 1992.

The electronic word processing keyboards [[AlphaSmart]] Dana and the Quickpad Pro bear some resemblance to the physical format of the TRS-80 Model 100. In Japan, Pomera still makes and sells dedicated word processors under model names Pomera DM100, Pomera DM200 etc.

The [[Laser 50]] educational computer is in the same size and form factor as the Model 100, and was sold by Video Technology.