• Adding device
• Ancestor of the adding machine
• Ancient adder
• Ancient adding device
• Ancient calculator
• Ancient computer
• Arithmetic device
• Basic computer
• Beaded calculator
• Beaded counter
• Beaded device
• Calculator of a kind
• Calculator of a sort
• Calculator precursor
• Calculator that doesn't need batteries
• Calculator that has no on-off switch
• Calculator with beads
• Calculator's ancestor
• Chinese calculator
• Column slab
• Count on it
• Counter-intuitive calculator?
• Counting aid
• Counting board
• Crude calculator
• Device you can count on
• Early calculator
• Early computer
• Early counter
• Early summer?
• Eastern summer
• Gadget you can count on?
• It may be counted on
• Item with beads
• Kind of calculator
• Low-tech calculator
• Low-tech counting device
• Old adder
• Old calculator
• Old store counter
• Old World adder
• Primitive calculator
• Problem solver?
• Something you can count on
• Something you can still count on
• Tool that's counter-productive?
• You can always count on this
• You can count on it
• A calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
• A tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
It is believed that the abacus was first used by the Babylonians, as early as 2,400 B.C. Since that time, the physical structure of abaci have changed. However, the idea has survived almost five millenia, and is still being used today.
The Chinese and Japanese use different finger techniques with their abaci. The Chinese use three fingers (thumb, index, and middle) to move the beads; while the Japanese only use their thumb and index fingers.
1. абак(а); счёты
2. архит.
1) абак(а), верхняя часть капители колонны
2) мозаичная панель
3. мат. номограмма
Англо-русский строительный словарь. — М.: Русский Язык.С.Н.Корчемкина, С.К.Кашкина, С.В.Курбатова.1995.
Рахівниця
абак(а)
координатна сітка
номограма