Abstract: A handheld apparatus for tracking, recording and retrieving time by account, task and date. The device permits entry of one or more account numbers and one or more tasks associated with each account number. When working on an activity for a selected account and task, a "timer" can be started for that account's activity and the device will keep track of total accumulated time. Recorded data can be retrieved on the internal display or transferred to a computer for processing.

Abstract: A method and apparatus for actuating solenoids in an electronic player piano where a Musical Instrument Digital Interface (MIDI) velocity value is translated to a solenoid driving signal, a counter is activated by the solenoid driving signal, and a solenoid is energized from the counter according to the solenoid driving signal. A central processing unit (CPU) reads the MIDI data from a digital data storage device, and selects the corresponding solenoid driving parameters from a look-up table stored in read only memory (ROM). The solenoid driving parameters are converted into a pulse width modulation (PWM) waveform by a driving circuit containing counters. The PWM signal is sent to the gate of a field effect transistor (FET) switch connected to the solenoid and the solenoid is energized by the FET according to the PWM signal.