Don’t be deceived by its unassuming looks–this baby packs quite a punch, functionally speaking. In the early ’80s, Casio sought to provide a do-it-all device for the travelling businessman or busy student. The TA-1000 provides a nice calculator, a clock and a datebook of sorts (actually an array of six alarms each with a unique “chime”) in a slim and lightweight package. Take a look at the display, isn’t the day listing on the bottom pretty sweet? But you’ll agree the topper is the multiple alarm notifications which can be demonstrated by Jay here.