abacus

An abacus is an ancient tool used for counting and calculating by moving beads. Depicted as a wooden frame with four or more rows of beads in different positions and colors. Used for a variety of content related to math and science (education), as well as more generally for calculations, counting, and numbers. Apple and Facebook's designs resemble the Chinese abacus (suanpan), as did Microsoft's previous design. According to one calculation, Apple's red-bead design shows the number 108, while Emojipedia's is 12,031,981.