This is one calculator that will definitely be banned in any classroom or exam hall – the USB 12-Digits Bilingual Talking Calculator. It will speak out the numbers that you have just pressed so that you will be able to know whether all your numbers have been input correctly. All figures are reproduced in a clear and loud voice, ruling this calculator out of the local library as well as any other educational institution where peace and quiet is much preferred. Both English and Mandarin languages are supported, and you can also turn this $23 calculator into a 12/24 hour alarm clock as well. We don’t think seasoned accountants will find this useful as their lightning fast fingers will probably punch numbers in faster than the voice part could keep up with.