what was a abacus device? explain
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ᴀɴ ᴀʙᴀᴄᴜꜱ ɪꜱ ᴀ ᴍᴀɴᴜᴀʟ ᴀɪᴅ ᴛᴏ ᴄᴀʟᴄᴜʟᴀᴛɪɴɢ ᴛʜᴀᴛ ᴄᴏɴꜱɪꜱᴛꜱ ᴏꜰ ʙᴇᴀᴅꜱ ᴏʀ ᴅɪꜱᴋꜱ ᴛʜᴀᴛ ᴄᴀɴ ʙᴇ ᴍᴏᴠᴇᴅ ᴜᴩ ᴀɴᴅ ᴅᴏᴡɴ ᴏɴ ᴀ ꜱᴇʀɪᴇꜱ ᴏꜰ ꜱᴛɪᴄᴋꜱ ᴏʀ ꜱᴛʀɪɴɢꜱ ᴡɪᴛʜɪɴ ᴀ ᴜꜱᴜᴀʟʟy ᴡᴏᴏᴅᴇɴ ꜰʀᴀᴍᴇ. ᴛʜᴇ ᴀʙᴀᴄᴜꜱ ɪᴛꜱᴇʟꜰ ᴅᴏᴇꜱɴ'ᴛ ᴄᴀʟᴄᴜʟᴀᴛᴇ; ɪᴛ'ꜱ ꜱɪᴍᴩʟy ᴀ ᴅᴇᴠɪᴄᴇ ꜰᴏʀ ʜᴇʟᴩɪɴɢ ᴀ ʜᴜᴍᴀɴ ʙᴇɪɴɢ ᴛᴏ ᴄᴀʟᴄᴜʟᴀᴛᴇ ʙy ʀᴇᴍᴇᴍʙᴇʀɪɴɢ ᴡʜᴀᴛ ʜᴀꜱ ʙᴇᴇɴ ᴄᴏᴜɴᴛᴇᴅ.
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An abacus is a manual aid to calculating that consists of beads or disks that can be moved up and down on a series of sticks or strings within a usually wooden frame. The abacus itself doesn't calculate; it's simply a device for helping a human being to calculate by remembering what has been counted.
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