A LEGO Technic repeating crossbow, inspired by Chinese crossbow with magazine and rotating reloading arm.
Digicomp
10,00 € -Excl. Tax
The Digicomp was a mechanical computer sold as a plastic toy in 1963, capable to count, multiply, divide, depending of how it is programmed. Here is a functional replica in LEGO Technic.
Video Presentation
Specifications
This LEGO Technic “computer” is composed of :
- Clock
- Operating Wires
- Bits (3)
- Sense Wires
- Program
The clock is operated manually. It is composed of two sliders which surround the rotating actuator wires, its role is to operate the rotating actuator wires, depending of two variables : the bit-value and the program. You can program it by putting or removing some parts on each input (2 inputs), and then operate by moving the clock, the machine will read the input value and then operates depending of the truth table you set, then it gives you the result (one output) in binary.
You can read the full review of this model on the blogpost.
How to build ?
You can either purchase the PDF instructions only on this shop, or purchase the complete package including genuine LEGO parts plus PDF instructions, on 
Buildamoc shop.
Each instruction contains the partlist at the end, but you can check individually on 
Rebrickable or in the instructions preview below. The instructions also includes basic programs to create and run : Binary Counter (up and down), and Guess The Day.
About this product
Instructions preview
Additional information
| Model Size | 50x14x16cm |
|---|---|
| Color | Red, Yellow |
| Categories | All, Machine |
| Motorized | No |
| Building Difficulty | Hard |
| Piece Count | 1465 |
| Bill Of Material | https://rebrickable.com/mocs/MOC-0281/Nico71/lego-computer-digicomp/#parts |
| Purchased File | PDF Instructions (120 pages / 60mo) |
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