Edsac Replica Project - Chassis Details

Bench-5 CCU Panel XI Bench-9 Digit Pulse Distributor Unit Bench-12 Maintenance Panel F1-2 Store Regeneration Unit F1-3 Store Regeneration Unit F1-4 Store Regeneration Unit F1-5 Store Regeneration Unit F1-6 Final Tank Decoder F1-7 Tank Decoder Logic F1-8 Tank Decoder Distributor F1-9 Final Tank Decoder F1-10 Store Regeneration Unit F1-11 Store Regeneration Unit F1-12 Store Regeneration Unit F1-13 Store Regeneration Unit F2-2 Store Regeneration Unit F2-3 Store Regeneration Unit F2-4 Store Regeneration Unit F2-5 Store Regeneration Unit F2-6 Final Tank Decoder F2-7 Tank Decoder Logic F2-8 Tank Decoder Distributor F2-9 Final Tank Decoder F2-10 Store Regeneration Unit F2-11 Store Regeneration Unit F2-12 Store Regeneration Unit F2-13 Store Regeneration Unit F3-1 Negative PSU F3-2 Digit Pulse Generator Type 1 F3-3 Digit Pulse Generator Type 1 F3-4 Digit Pulse Generator Type 1 F3-5 Digit Pulse Generator Type 1 F3-6 Digit Pulse Generator Type 1 F3-7 Digit Pulse Generator Type 2 F3-8 Digit Pulse Generator Type 2 F3-9 Digit Pulse Distributor (DU2) F3-10 Clock Pulse Distributor (DU1) F3-12 Clock Pulse Generator F3-13 Clock Monitor F4-4 Printer Unit 3 F4-5 Printer Unit 2 F4-6 Printer Unit 1 F4-7 Paper Tape Unit 2 F4-8 Paper Tape Unit 1 F4-9 Manual Order Unit F4-10 Initial Input Unit 2 F4-11 Initial Input Unit 1 F4-13 Initial Orders Uniselectors M1-1 Power Supply Unit M1-2 Main Control Unit 2 M-2 M1-3 Main Control Unit 3 M-3 M1-4 Main Control Unit 1 M-1 M1-5 Coincidence Unit 2 M1-6 Coincidence Unit 1 M1-7 Counter + SCT Control M1-8 Order Tank Control M1-9 SCT Half Adder M1-10 Counter Half Adder M1-11 Order Tank Regen M1-12 Coincidence Unit 3 M1-13 Sequence Control Tank Regen M1-14 Counter Tank Regen M2-1 Power Supply Unit M2-2 Order Secondary Decoder Type 1 C-4 M2-3 Order Secondary Decoder Type 1 C-3 M2-4 Order Distributer Unit D-2 M2-5 Order Secondary Decoder Type 2 C-2 M2-6 Order Secondary Decoder Type 1 C-1 M2-7 Order Distributer Unit D-1 M2-8 Order Coder Unit Type 2 E-2 M2-9 Order Coder Unit Type 1 E-1 M2-10 Operator's Control Unit M2-11 Transfer Unit 2 M2-12 Transfer Unit 1 M2-13 Transfer Tank Regen M3-1 Power Supply Unit M3-2 Order Flashing Unit Type 2 A-3 M3-3 Order Flashing Unit Type 2 A-2 M3-4 Order Flashing Unit Type 1 A-1 M3-5 Order Primary Decoder B-1 M3-8 Flashing Unit Type 2 M3-9 Flashing Unit Type 2 M3-10 Flashing Unit Type 2 M3-11 Flashing Unit Common M3-12 Rack Distribution Logic M3-13 Rack Decoder Power-0 Internal HT Soft Start Power-0 Power Rack Power-1 HT PSU 3 Power-2 HT PSU 2 Power-3 HT PSU 1 Power-4 AC Protection Power-5 DC+HT Protection Power-6 AC Metering Power-7 HT Metering Power-8 DC Metering Power-9 Spare Power-10 Control Panel R1-2 Store Regeneration Unit R1-3 Store Regeneration Unit R1-4 Store Regeneration Unit R1-5 Store Regeneration Unit R1-6 Final Tank Decoder R1-7 Tank Decoder Logic R1-8 Tank Decoder Distributor R1-9 Final Tank Decoder R1-10 Store Regeneration Unit R1-11 Store Regeneration Unit R1-12 Store Regeneration Unit R1-13 Store Regeneration Unit R2-2 Store Regeneration Unit R2-3 Store Regeneration Unit R2-4 Store Regeneration Unit R2-5 Store Regeneration Unit R2-6 Final Tank Decoder R2-7 Tank Decoder Logic R2-8 Tank Decoder Distributor R2-9 Final Tank Decoder R2-10 Store Regeneration Unit R2-11 Store Regeneration Unit R2-12 Store Regeneration Unit R2-13 Store Regeneration Unit R3-2 ASU 2 R3-3 ASU 1 R3-4 Accumulator Tank 1 Regen R3-5 Accumulator Tank 2 Regen R3-6 Half Adder 1 R3-7 Half Adder 2 R3-8 Distributing Unit 3 R3-9 Collater Unit R3-10 Complementer Unit R3-11 Partial Product Adder R3-12 CCU VI R3-13 CCU X R4-2 CCU II Mult Control R4-3 CCU III Shifting Control R4-4 Accumulator supportUnit R4-5 CCU V Rounding R4-6 TCT Shifting Control R4-7 TCT Regen R4-8 Multiplicand Control Unit R4-10 Multiplicand Tank Regen R4-11 Multiplicand Shifting Unit R4-12 Multiplier Tank Regen R4-13 Multiplier Support Unit R5-6 CCU VII R5-7 CCU IV Arithmetic Control R5-8 CCU IX & XI Register Clear R5-9 CCU I R5-11 CCU VIII R5-13 Buffers Chassis M3:10: Flashing Unit Type 2    (Tank Flashing Unit) Title: Flashing Unit Type 2 Location Rack: M3 Shelf: 10 Chassis type: 08  Ser:  03 Current Owner: JMP Status: In Rack Name Pos I/O Vmax Vmin Wires? 0V - - ->M3:11:() ->M3:12:() ->M3:13:() ->M3:9:() ->M3:8:() FyP - - Reset - - FxP - - 0V - - ->M3:9:() ->M3:8:() ->M3:5:() ->M3:4:() ->M3:3:() ->M3:2:() ->M3:11:() ->M3:12:() ->M3:13:() DY - - SET - - FF - - DX - - 0V 1 O - - • Images of the the chassis None available • Chassis drawings None available • Link to circuit diagram None available • Link to logic diagram None available • Hardware Notes None available • Other related documents None available

Bench-5 CCU Panel XI Bench-9 Digit Pulse Distributor Unit Bench-12 Maintenance Panel F1-2 Store Regeneration Unit F1-3 Store Regeneration Unit F1-4 Store Regeneration Unit F1-5 Store Regeneration Unit F1-6 Final Tank Decoder F1-7 Tank Decoder Logic F1-8 Tank Decoder Distributor F1-9 Final Tank Decoder F1-10 Store Regeneration Unit F1-11 Store Regeneration Unit F1-12 Store Regeneration Unit F1-13 Store Regeneration Unit F2-2 Store Regeneration Unit F2-3 Store Regeneration Unit F2-4 Store Regeneration Unit F2-5 Store Regeneration Unit F2-6 Final Tank Decoder F2-7 Tank Decoder Logic F2-8 Tank Decoder Distributor F2-9 Final Tank Decoder F2-10 Store Regeneration Unit F2-11 Store Regeneration Unit F2-12 Store Regeneration Unit F2-13 Store Regeneration Unit F3-1 Negative PSU F3-2 Digit Pulse Generator Type 1 F3-3 Digit Pulse Generator Type 1 F3-4 Digit Pulse Generator Type 1 F3-5 Digit Pulse Generator Type 1 F3-6 Digit Pulse Generator Type 1 F3-7 Digit Pulse Generator Type 2 F3-8 Digit Pulse Generator Type 2 F3-9 Digit Pulse Distributor (DU2) F3-10 Clock Pulse Distributor (DU1) F3-12 Clock Pulse Generator F3-13 Clock Monitor F4-4 Printer Unit 3 F4-5 Printer Unit 2 F4-6 Printer Unit 1 F4-7 Paper Tape Unit 2 F4-8 Paper Tape Unit 1 F4-9 Manual Order Unit F4-10 Initial Input Unit 2 F4-11 Initial Input Unit 1 F4-13 Initial Orders Uniselectors M1-1 Power Supply Unit M1-2 Main Control Unit 2 M-2 M1-3 Main Control Unit 3 M-3 M1-4 Main Control Unit 1 M-1 M1-5 Coincidence Unit 2 M1-6 Coincidence Unit 1 M1-7 Counter + SCT Control M1-8 Order Tank Control M1-9 SCT Half Adder M1-10 Counter Half Adder M1-11 Order Tank Regen M1-12 Coincidence Unit 3 M1-13 Sequence Control Tank Regen M1-14 Counter Tank Regen M2-1 Power Supply Unit M2-2 Order Secondary Decoder Type 1 C-4 M2-3 Order Secondary Decoder Type 1 C-3 M2-4 Order Distributer Unit D-2 M2-5 Order Secondary Decoder Type 2 C-2 M2-6 Order Secondary Decoder Type 1 C-1 M2-7 Order Distributer Unit D-1 M2-8 Order Coder Unit Type 2 E-2 M2-9 Order Coder Unit Type 1 E-1 M2-10 Operator's Control Unit M2-11 Transfer Unit 2 M2-12 Transfer Unit 1 M2-13 Transfer Tank Regen M3-1 Power Supply Unit M3-2 Order Flashing Unit Type 2 A-3 M3-3 Order Flashing Unit Type 2 A-2 M3-4 Order Flashing Unit Type 1 A-1 M3-5 Order Primary Decoder B-1 M3-8 Flashing Unit Type 2 M3-9 Flashing Unit Type 2 M3-10 Flashing Unit Type 2 M3-11 Flashing Unit Common M3-12 Rack Distribution Logic M3-13 Rack Decoder Power-0 Internal HT Soft Start Power-0 Power Rack Power-1 HT PSU 3 Power-2 HT PSU 2 Power-3 HT PSU 1 Power-4 AC Protection Power-5 DC+HT Protection Power-6 AC Metering Power-7 HT Metering Power-8 DC Metering Power-9 Spare Power-10 Control Panel R1-2 Store Regeneration Unit R1-3 Store Regeneration Unit R1-4 Store Regeneration Unit R1-5 Store Regeneration Unit R1-6 Final Tank Decoder R1-7 Tank Decoder Logic R1-8 Tank Decoder Distributor R1-9 Final Tank Decoder R1-10 Store Regeneration Unit R1-11 Store Regeneration Unit R1-12 Store Regeneration Unit R1-13 Store Regeneration Unit R2-2 Store Regeneration Unit R2-3 Store Regeneration Unit R2-4 Store Regeneration Unit R2-5 Store Regeneration Unit R2-6 Final Tank Decoder R2-7 Tank Decoder Logic R2-8 Tank Decoder Distributor R2-9 Final Tank Decoder R2-10 Store Regeneration Unit R2-11 Store Regeneration Unit R2-12 Store Regeneration Unit R2-13 Store Regeneration Unit R3-2 ASU 2 R3-3 ASU 1 R3-4 Accumulator Tank 1 Regen R3-5 Accumulator Tank 2 Regen R3-6 Half Adder 1 R3-7 Half Adder 2 R3-8 Distributing Unit 3 R3-9 Collater Unit R3-10 Complementer Unit R3-11 Partial Product Adder R3-12 CCU VI R3-13 CCU X R4-2 CCU II Mult Control R4-3 CCU III Shifting Control R4-4 Accumulator supportUnit R4-5 CCU V Rounding R4-6 TCT Shifting Control R4-7 TCT Regen R4-8 Multiplicand Control Unit R4-10 Multiplicand Tank Regen R4-11 Multiplicand Shifting Unit R4-12 Multiplier Tank Regen R4-13 Multiplier Support Unit R5-6 CCU VII R5-7 CCU IV Arithmetic Control R5-8 CCU IX & XI Register Clear R5-9 CCU I R5-11 CCU VIII R5-13 Buffers Chassis F3:8: Digit Pulse Generator Type 2 Title: Digit Pulse Generator Type 2 Location Rack: F3 Shelf: 8 Chassis type: 15  Ser:  02 Current Owner: JS Status: In Rack Name Pos I/O Vmax Vmin Wires? CLK 2 I - - ->F3:12:8(O) ->F3:7:2(I) ->F3:6:2(I) ->F3:5:2(I) ->F3:4:2(I) ->F3:3:2(I) ->F3:2:2(I) Gate In 6 I - - ->F3:7:28(O) Digit 1 10 O - - ->F3:9:55(I) Digit 2 16 O - - ->F3:10:36(I) Digit 3 20 O - - Digit 4 24 O - - Gate Out 28 O - - -6V 32 I - - ->F3:7:32(I) ->F3:6:32(I) ->F3:5:32(I) ->F3:4:32(I) ->F3:3:32(I) ->F3:2:32(I) ->F3:1:32(O) • Images of the the chassis None available • Chassis drawings EDSAC_Shelf_03.dxf EDSAC_Shelf_03.pdf • Link to circuit diagram Digit_Pulse_Generator_Type_2_Schematic.pdf Digit_Pulse_Generator_Type_2_Schematic.sch • Link to logic diagram None available • Hardware Notes None available • Other related documents None available

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Last updated 2020-12-05
data last updated: 2021-01-30