2 layers283 × 96 mm
2 layers150 × 100 mm
Keyboard interface 3
ibm2030/EDUC813EDUC-8 recreation by Gwyllym Suter
- Size
- 150 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 75
- Nets
- 71
- Pads
- 286
- Tracks, vias
- 373, 23
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 5 Mar 2023
- Updated
- 28 May 2026
Overview
Keyboard interface 3 is an open-source printed circuit board by ibm2030, from the ibm2030/EDUC8 repository on GitHub. It is a 2-layer board of 150 × 100 mm with 75 parts on 71 nets, routed with 373 tracks and 23 vias.
It is built around the 74LS02PC, 74LS05P-E and 74LS123FP-E, with the 74LS37P-E among its other parts. Its parts include 43 diodes, 15 resistors, 6 ICs, 2 capacitors and 2 connectors. It belongs with the keyboards and input and interfaces and adapters boards of this library.
Main components
4
74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates74LS05P-E
-- Inverters ROHSRenesas ElectronicsLogic Gates74LS123FP-E
-Reset input、Adjustable pulse width、Retriggerable function - Monostable Multivibrators ROHSRenesas ElectronicsMonostable Multivibrators74LS37P-E
--20℃~+75℃ 1 1.2mA 12ns 24mA 4 74LS Series - Flip Flops ROHSRenesas ElectronicsFlip Flops
README
README.mdEDUC8
EDUC-8 recreation by Gwyllym Suter
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 1N914 | Diode_THT:D_DO-35_SOD27_P12.70mm_Horizontal | D9, D11, D16, D17, D22, D25, D27, D29, D31, D32, D38, D40, D42 |
| 8 | 1N914 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D7, D13, D15, D19, D21, D28, D35, D37 |
| 8 | 1N914 | Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal | D10, D12, D20, D24, D26, D30, D34, D41 |
| 8 | 1N914 | Diode_THT:D_DO-35_SOD27_P5.08mm_Vertical_KathodeUp | D8, D14, D18, D23, D33, D36, D39, D43 |
| 7 | 180R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5, R6, R8 |
| 6 | 27k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R10, R11, R12, R13, R14 |
| 6 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6 |
| 6 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4, H5, H6 |
| 1 | 100pF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C2 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15 |
| 1 | 1nF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1 |
| 1 | 33k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 7400 | Package_DIP:DIP-14_W7.62mm | U2 |
| 1 | 7496 | Package_DIP:DIP-16_W7.62mm | U5 |
| 1 | 74LS02 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | 74LS05 | Package_DIP:DIP-14_W7.62mm | U6 |
| 1 | 74LS123 | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | 74LS37 | Package_DIP:DIP-14_W7.62mm | U4 |
| 1 | Conn_01x08_Male | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | Conn_01x16_Male | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | J1 |
The 74 most common of 75 parts.
Questions
How big is the Keyboard interface 3 PCB?
It measures 150 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard interface 3 use?
75 parts, built around the 74LS02PC, 74LS05P-E, 74LS123FP-E and 74LS37P-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Keyboard interface 3 KiCad files?
From the ibm2030/EDUC8 repository on GitHub, at the commit this page was made from: the board is octal. keyboard/octal keyboard/Keyboard interface 3.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard interface 3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask ibm2030 before reusing the design.
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