アナログ計算機[anarogukeisanki] analog computer
シフト演算機構[shifutoenzankikou] shift arithmetic unit
暗算[anzan] mental arithmetic
違算[isan] miscalculation
一般命令演算機構[ippanmeireienzankikou] general instruction unit (computer)

運算[unzan] mathematical operation
演算[enzan] (mathematical) operation
演算機[enzanki] processor (as in computer chip)
演算子[enzanshi] operator
演算手順[enzantejun] algorithm

一籌[icchuu] (a) point
一籌を輸する[icchuuwoyusuru] to be inferior to

籌木[chuugi] small block of wood used to clean one's buttocks after defecating
算籌[sanchuu] sticks used for counting