September 20, 1989 (vol. 100, iss. 10) • Page Image 15
…Designed to speed you through challenging calculations. grips in the sides of the case promote sure handling. The calculator is powered by one lithium battery (included) that provides approximately 1,500 hours of operation that's roughly four years of normal use. TI's APD" automatic power down feature extends battery life by turning off the calculator after several minutes of non-use. The TI-68 includes a 180-page guide- book that fully descri...…