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DSCN5031.jpgAtlas Circuit Board add-on52 viewsThis is the thin insulating board affixed to the printed circuit side, to prevent short-circuits when boards are pulled out or pushed in to the live computer.billwilladmin
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DSCN5030.jpgAtlas Circuit Board56 viewsType 813A logic board.
Protection insulation sheet remove, so some brave soul can trace through the circuit. :-)
Note the oscilloscope test-points on the outside edge.billwilladmin
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DSCN5029.jpgAtlas Circuit Board53 viewsType 813A logic board.
Complete with protective insulated sheet.
Note the oscilloscope test-points on the outside edge.billwilladmin
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DSCN5028.jpgAtlas Circuit Board52 viewsType 813A logic board.
Note the oscilloscope test-points on the outside edge.billwilladmin
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DSCN5027.jpgAtlas Circuit Board51 viewsType 815A logic board.
Note the oscilloscope test-points on the outside edge.billwilladmin
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DSCN5026.jpgAtlas Circuit Board52 viewsType 815A logic board.
Note the oscilloscope test-points on the outside edge.billwilladmin
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DSCN5025.jpgAtlas Circuit Board55 viewsType 848A logic board.
Note the oscilloscope test-points on the outside edge.billwilladmin
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DSCN5024.jpgAtlas Circuit Board55 viewsType 848A logic board.
Note the oscilloscope test-points on the outside edge.
billwilladmin
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DSCN5023.jpgAtlas Circuit Board55 viewsType 846A logic board.
billwilladmin
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DSCN5022.jpgAtlas Circuit Board52 viewsType 846A logic board.
Note the oscilloscope test-point rings on the outside edge.billwilladmin
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DSCN5019.jpgAtlas Circuit Board55 viewsType 886 Logic boardbillwilladmin
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DSCN5018.jpgAtlas Circuit Board52 viewsType 886 Logic boardbillwilladmin
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DSCN5017.jpgAtlas Circuit Board51 viewsType 846 A or B: A logic boardbillwilladmin
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DSCN5016.jpgAtlas Circuit Board53 viewsType 846 A or B: A logic boardbillwilladmin
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DSCN5015.jpgAtlas Circuit Board52 viewsType 962, this is a curious board it seems to be some sord of sequenced delay line for short intervals.
The shiny plastic appearance is an uncompleted attempts to preserve it forever in a solid block of perspex. billwilladmin
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DSCN5014.jpgAtlas Circuit Board53 viewsType 962, this is a curious board it seems to be some sort of sequenced delay line for short intervals.
The shiny plastic appearance is an uncompleted attempt to preserve it forever in a solid block of perspex. billwilladmin
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DSCN4394.JPGCircuit Board59 viewsI think this might be one of the two original transistor amplifiers from the paper tape reaer, but it was long ago in the late 1970s when I took them out and replaced then with a wirewrap board with integrated circuits.
billwill2
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DSCN4367.JPGPaper Tape Reader49 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
billwill2
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DSCN4364.JPG49 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
billwill2
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DSCN4363.JPG52 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
billwill2
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DSCN4362.JPG52 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
billwill2
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DSCN4361.JPG53 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
This is a photo of that new boardbillwill2
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DSCN4360.JPG57 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
This is a photo of that new boardbillwill2
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DSCN4359.JPG51 viewsOne of the Papertape Readers from London Atlas. Rescued from an Electronics 'junk' shop after London Atlas was dismantled.
In the late 1970's I replaced its circuit boards with one I made using integrated circuits, to use it with an S100 CP/M computer.
billwill2
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DSCN3761_28Custom29.JPGA Ferrite Core module95 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3762_28Custom29.JPG65 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3764_28Custom29.JPG70 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3765_28Custom29.JPG62 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3766_28Custom29.JPG60 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3767_28Custom29.JPG58 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3768_28Custom29.JPG59 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3769_28Custom29.JPG64 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3770_28Custom29.JPG63 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3771_28Custom29.JPG228 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3772_28Custom29.JPG59 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3773_28Custom29.JPG66 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3775_28Custom29.JPG66 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3776_28Custom29.JPG67 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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DSCN3780_28Custom29.JPG58 viewsRescued from from an electrinics 'junk' shop after London Atlas was dismantled.
This core module might be one of the peripheral buffer stores.
billwill2
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