ຈັກຂັ້ນ

ລິ້ງຄ໌ພາຍນອກ 
The London Science Museum exhibition on the Difference Engine 
Meccano Difference Engine #1
Meccano Difference Engine #2
Difference Engine in Lego 
Difference Engine workings with animations

ໝວດ:ຄອມພິວເຕີ
ໝວດ:ຈັກຄິດໄລ່