The BBC and Master Computer Public Domain Library
Acorn Computers Overview
Go to a specific computer
Click on the particular machine for mapped images with components listed
Keyboard Repairs
A page about keyboard repairsKeyboards, Keyswitches and Keytops
Click on the Thumbnails
Atom Keyboard
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The Atom keyboard |
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Side View |
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Keytop and keyswitch |
Electron
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Electron Keyboard |
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Electron Keyboard edge |
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Electron Keyswitch and keytop. These are the same as the
Master 128 except the colour of the keytop is different http://deskthority.net/wiki/Futaba_low-profile_linear |
BBC B and B+
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Type 1, 2, 3 and 4 together |
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Type 1 http://deskthority.net/wiki/Futaba_simplified_linear |
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Type 2 http://deskthority.net/wiki/SMK_vintage_linear |
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Type 3 http://deskthority.net/wiki/BBC_Micro_Type_3 |
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Type 4 http://deskthority.net/wiki/SMK_vintage_linear |
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Detail of type 1 |
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Detail of type 2 |
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Detail of type 3 |
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Detail of type 4 |
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This is the most common BBC keyswitch and keytop that I have found. I call it type 1. I had tons of these as spares. (Futaba) |
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This is another, not so good BBC keyswitch, they seem more prone to failure, I call these type 2. (Cheap SMK) |
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This is the type 3 keyswitch (PED). Thanks to Daniel Beardsmore for the information about this switch that you can find here http://telcontar.net/KBK/PED.php |
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Type 4 keyswitch (SMK). Thanks to Daniel Beardsmore for rooting out make information for these keyswitches. The link leads to his pages about keyboards and switches This is the specific page |
  
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Type 3 keyboard |
Master 128
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Master 128 Keyboard |
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Master 128 Keyboard. The new 'Cherry' type |
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The membrane for a cherry keyboard |
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This is the original Master 128 Keyswitch and keytop. In fact the keytop is the same as the BBC type 1 keytop |
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Here is the new Master keyboard. The keys are
clipped to the board into a plastic layer containing the tracks. I have
seen similar style keyswitches for the BBC: http://deskthority.net/wiki/Cherry_MY |
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A comparison between the original and new Master keytops |
Master Compact
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Keyboard in pieces, top view |
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Keyboard in pieces, view of underside |
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Master Compact Keyswitch and top |
Function Key Strip Covers
Top strip is the BBC B up to and including issue 4. It has a picture of an owl and the words BBC MICROCOMPUTER on it. The BBC B after issue 4 and 1983 had the function key strip with a picture of an owl and the words BRITISH BROADCASTING CORPORATION MICROCOMPUTER SYSTEM. The reason for this was that the trademark BBC was already taken in America. Click on the thumbnail.
The lower strip is a BBC B+ function key strip.
The Master 128 function key strip is plain.Click on the thumbnail:
