IO board
About the IO board
IO board is an open source PCB design by cherry-takuan, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 99.7 × 99.7 mm, with 36 components from 18 distinct parts.
Other key parts include the 74HC00, 74LS08, 74HC74, 4040 and 74LS21. By type, the board carries 9 connectors, 8 capacitors, 7 ICs, 7 resistors, 2 switches and 1 transistor.
From the project
NLP(Nand Logic Processor)のリポジトリ
ALU制御回路回路はALUを操作するための制御信号生成し，また演算結果からフラグを生成する機能を持っています。 #### ALU本体 aluc
最新バージョン : v1.1 *** ### レジスタファイル レジスタファイルとは，プロセッサ内で一時的に記憶するレジスタと呼ばれる回路を複数集積したものです。NLP-16Aでは16bitのデータを記憶可能なレジスタを16本持っています。
汎用レジスタは5本で，残りのレジスタは何らかの役割を持ち，単純な記憶以外の動作も行うことがあります。
最新バージョン : v1.2 *** ### 入出力 NLP-16Aは16 bit x 64 kwordの1つの入出力ポートを持っています。 内部的にはレジスタの一つとしてアクセス可能な構造になっています。
主記憶及び外部デバイスとの接続に使用されます。 #### 外部バス制御 Busterminator
Main components on the IO board
IO board bill of materials (BOM)
36 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HC00 | DIP-14_W7.62mm | U1 |
| 1 | 74LS08 | DIP-14_W7.62mm | U2 |
| 1 | 74HC74 | DIP-14_W7.62mm | U3 |
| 1 | 4040 | DIP-16_W7.62mm | U4 |
| 1 | 74LS21 | DIP-14_W7.62mm | U5 |
| 1 | 74LS138 | DIP-16_W7.62mm | U6 |
| 1 | 74LS541 | DIP-20_W7.62mm | U7 |
| 1 | 2SC1815 | TO-92_Inline | Q1 |
| 1 | CXO_DIP8 | Oscillator_DIP-8 | X1 |
| 1 | Conn_02x20_Odd_Even | PinHeader_2x20_P2.54mm_Horizontal | J1 |
| 2 | Conn_02x20_Odd_Even | PinSocket_2x20_P2.54mm_Vertical | J2, J9 |
| 6 | Screw_Terminal_01x02 | TerminalBlock_bornier-2_P5.08mm | J3, J4, J5, J6, J7, J8 |
| 1 | SW_Push | SW_Tactile_SPST_Angled_PTS645Vx31-2LFS | SW1 |
| 1 | SW_DIP_x04 | SW_DIP_SPSTx04_Piano_10.8x11.72mm_W7.62mm_P2.54mm | SW2 |
| 1 | LED | LED_D3.0mm | D1 |
| 7 | C | C_Disc_D7.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7 |
| 1 | C_Polarized | CP_Radial_D5.0mm_P2.50mm | C8 |
| 7 | R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R5, R6, R7 |
IO board design files
The KiCad project lives in the cherry-takuan/nlp repository on GitHub; these links point at the commit this page was built from.
IO board: common questions
How big is the IO board?
The IO board measures 99.7 × 99.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the IO board?
36 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the IO board design files?
From the cherry-takuan/nlp repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the IO board design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which cherry-takuan chose for the repository.
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