Terminals - User contributions [en]

DEC VT72

2023-06-23T17:04:15Z

Lesnyd01:

{{infobox terminal
| manufacturer = DEC
| model = VT72
| image = DEC VT72T.jpg
| intro_year =
| intro_month =
| intro_prior =
| intro_price =
| discontinued_year =
| discontinued_month =
| interface =
| interface2 =
| interface3 =
| interface4 =
| interface5 =
| baud_rates =
| display_size =
| phosphor =
| phosphor2 =
| phosphor3 =
| refresh_rate =
| refresh_rate2 =
| char_resolution =
| char_resolution2 =
| char_resolution3 =
| char_resolution4 =
| status_line =
| char_matrix =
| char_cell =
| graphic_type =
| graphic_resolution =
| cpu =
| rom =
| ram =
| personality1 =
| personality2 =
| personality3 =
| personality4 =
| personality5 =
| personality6 =
| personality7 =
| personality8 =
| personality9 =
| personality10 =
| terminfo =
}}

==[[Manx]]==
* {{manx details|1,11975|VT72 Vol. 1 Field Maintenance Print Set}}
* {{manx details|1,11973|VT72 Vol. 2 Field Maintenance Print Set}}

The VT72 was the follow-on to the VT20 for use with DEC's typesetting system, called Typeset-11 and Typeset-10. The system included editing software for use in the newsroom. The VT72 contained an LSI PDP-11 internally with 16k of memory and allowed newsroom personnel to edit and write news articles for the publication. The VT72 had no built-in character set. Each character had to be defined with aa 10x10 pixel map and assigned to an ASCII value and connect to a key on the keyboard. The Digital supplied software only used paging for editing, meaning it downloaded a buffer full of text, allowed it to be edited, then uploaded it when finished and paged to the next buffer of text. The Kansas City Star adapted the Typeset-10 software for the VT20 to the VT72, allowing editors to scroll through stories too long to fit in memory on the VT72, but using associative memory to mirror changes on the terminal with a copy on the host. The bootstrap was now in the terminal, no longer needing to be hand-entered into the switches as with the VT20.

The VT172 followed the VT172, but was essentially the same terminal in a VT100 enclosure, with the VT72 style keyboard

==Images==
<gallery>
File:DEC VT72T.jpg
</gallery>

[[Category:DEC|VT72]]
{{category raster}}
{{stub}}

DEC VT72

2023-06-23T16:56:43Z

Lesnyd01:

{{infobox terminal
| manufacturer = DEC
| model = VT72
| image = DEC VT72T.jpg
| intro_year =
| intro_month =
| intro_prior =
| intro_price =
| discontinued_year =
| discontinued_month =
| interface =
| interface2 =
| interface3 =
| interface4 =
| interface5 =
| baud_rates =
| display_size =
| phosphor =
| phosphor2 =
| phosphor3 =
| refresh_rate =
| refresh_rate2 =
| char_resolution =
| char_resolution2 =
| char_resolution3 =
| char_resolution4 =
| status_line =
| char_matrix =
| char_cell =
| graphic_type =
| graphic_resolution =
| cpu =
| rom =
| ram =
| personality1 =
| personality2 =
| personality3 =
| personality4 =
| personality5 =
| personality6 =
| personality7 =
| personality8 =
| personality9 =
| personality10 =
| terminfo =
}}

==[[Manx]]==
* {{manx details|1,11975|VT72 Vol. 1 Field Maintenance Print Set}}
* {{manx details|1,11973|VT72 Vol. 2 Field Maintenance Print Set}}

The VT72 was the follow-on to the VT20 for use with DEC's typesetting system, called Typeset-11 and Typeset-10. The system included editing software for use in the newsroom, justification and hyphenation software for creating type (cold type using phototypesetters) and software to drive the typesetters. The VT72 contained an LSI PDP-11 internally with 16k of memory and allowed newsroom personnel to edit and write news articles for the publication. There was also an RS232 feed from the wire services that saved wire stories on the host and routed them using an internal mailbox system. The VT72 had no built-in character set. Each character had to be defined with aa 10x10 pixel map and assigned to an ASCII value and connect to a key on the keyboard. The Digital supplied software only used paging for editing, meaning it downloaded a buffer full of text, allowed it to be edited, then uploaded it when finished and paged to the next buffer of text. The Kansas City Star adapted the Typeset-10 software for the VT20 to the VT72, allowing editors to scroll through stories too long to fit in memory on the VT72, but using associative memory to mirror changes on the terminal with a copy on the host. The bootstrap was now in the terminal, no longer needing to be hand-entered into the switches as with the VT20.

The VT172 followed the VT172, but was essentially the same terminal in a VT100 enclosure, with the VT72 style keyboard

==Images==
<gallery>
File:DEC VT72T.jpg
</gallery>

[[Category:DEC|VT72]]
{{category raster}}
{{stub}}

DEC VT72

2023-06-23T16:54:25Z

Lesnyd01:

{{infobox terminal
| manufacturer = DEC
| model = VT72
| image = DEC VT72T.jpg
| intro_year =
| intro_month =
| intro_prior =
| intro_price =
| discontinued_year =
| discontinued_month =
| interface =
| interface2 =
| interface3 =
| interface4 =
| interface5 =
| baud_rates =
| display_size =
| phosphor =
| phosphor2 =
| phosphor3 =
| refresh_rate =
| refresh_rate2 =
| char_resolution =
| char_resolution2 =
| char_resolution3 =
| char_resolution4 =
| status_line =
| char_matrix =
| char_cell =
| graphic_type =
| graphic_resolution =
| cpu =
| rom =
| ram =
| personality1 =
| personality2 =
| personality3 =
| personality4 =
| personality5 =
| personality6 =
| personality7 =
| personality8 =
| personality9 =
| personality10 =
| terminfo =
}}

==[[Manx]]==
* {{manx details|1,11975|VT72 Vol. 1 Field Maintenance Print Set}}
* {{manx details|1,11973|VT72 Vol. 2 Field Maintenance Print Set}}

The VT72 was the follow-on to the VT20 for use with DEC's typesetting system, called Typeset-11 and Typeset-10. The system included editing software for use in the newsroom, justification and hyphenation software for creating type (cold type using phototypesetters) and software to drive the typesetters. The VT72 contained an LSI PDP-11 internally with 16k of memory and allowed newsroom personnel to edit and write news articles for the publication. There was also an RS232 feed from the wire services that saved wire stories on the host and routed them using an internal mailbox system. The VT72 had no built-in character set. Each character had to be defined with aa 10x10 pixel map and assigned to an ASCII value and connect to a key on the keyboard. The Digital supplied software only used paging for editing, meaning it downloaded a buffer full of text, allowed it to be edited, then uploaded it when finished and paged to the next buffer of text. The Kansas City Star adapted the Typeset-10 software for the VT20 to the VT72, allowing editors to scroll through stories too long to fit in memory on the VT72, but using associative memory to mirror changes on the terminal with a copy on the host. The bootstrap was now in the terminal, no longer needing to be hand-entered into the switches as with the VT20.
==Images==
<gallery>
File:DEC VT72T.jpg
</gallery>

[[Category:DEC|VT72]]
{{category raster}}
{{stub}}

DEC VT20

2023-06-23T16:42:13Z

Lesnyd01:

{{infobox terminal
| manufacturer = DEC
| model = VT20
| image = DEC VT20-1.jpg
| intro_year =
| intro_month =
| intro_prior =
| intro_price =
| discontinued_year =
| discontinued_month =
| interface = RS-232C
| interface2 =
| interface3 =
| interface4 =
| interface5 =
| baud_rates =
| display_size =
| phosphor =
| phosphor2 =
| phosphor3 =
| refresh_rate =
| refresh_rate2 =
| char_resolution =
| char_resolution2 =
| char_resolution3 =
| char_resolution4 =
| char_resolution5 =
| char_resolution6 =
| char_resolution7 =
| char_resolution8 =
| char_resolution9 =
| char_resolution10 =
| status_line =
| char_matrix =
| char_cell =
| graphic_type =
| graphic_resolution =
| cpu =
| rom =
| ram =
| personality1 =
| personality2 =
| personality3 =
| personality4 =
| personality5 =
| personality6 =
| personality7 =
| personality8 =
| personality9 =
| personality10 =
| personality11 =
| personality12 =
| personality13 =
| personality14 =
| personality15 =
| personality16 =
| personality17 =
| personality18 =
| personality19 =
| personality20 =
| personality21 =
| personality22 =
| personality23 =
| personality24 =
| personality25 =
| terminfo =
| gnuplot =
}}
The {{PAGENAME}} terminal is a variant of the [[DEC VT05]] terminal with special facilities for typesetting.

The VT20/B is another variant with a different enclosure.

Two VT20/B terminals were connected to single PDP-11/05 (a variant of the 11/10) which was connected via RS232 to a host system, either a larger PDP-11 or a DECsystem-10, running Typeset-11 or Typeset-10. Newspapers using Typeset-10 were The Kansas City Star, the Chicago Tribune, and the London, Ontario, Free Press. The PDP-11/05 was booted by toggling in the bootstrap using the switches on the front of the machine, then downloading the abs loader and actual software through the RS232 interface from the host. The PDP-11/05 buffered text (news stories) downloaded from the host and allowed editing on the VT20. On Typeset-11 it was page oriented, a page would be downloaded, edited, then uploaded back to the host. On Typeset-10 the text was downloaded, but an associated memory system mirrored changes made on the text in the -11 to a copy on the -10. When the "save" button was pressed, the text was copied from associative memory into the actual text file on the DECsystem-10. This allowed for virtual scrolling through large files without having to save and load pages. The VT20s were eventually replaced by the VT72s, which featured a micro PDP-11 internally, with twice the memory of the old PDP-11/05s that controlled the VT20s. Interestingly enough, Digital no longer supported the associative memory version of the editing software, requiring page level editing. The Kansas City Star rewrote the PDP-11 software for the VT20s to run on the VT72, allowing for further virtual scrolling of large files, and making saving edits faster. The VT72 was replaced by the VT172, virtually the same terminal but in a VT100 type of form, with even more memory (32k).

==Images==
<gallery>
File:DEC VT20-1.jpg
File:DEC VT20B-1.jpg
File:DEC VT20B-2.jpg
File:DEC VT20B-3.jpg
</gallery>

[[Category:DEC|VT20]]
[[Category:DEC VT0x]]
{{category raster}}
{{stub}}

DEC VT20

2023-06-23T12:42:48Z

Lesnyd01: