Digital automobile tester

Abstract

Handheld electronic instrument for diagnosing the operating condition of a vehicle. The instrument is capable of performing the basic functions of a multimeter as well as able to test at least one system of a vehicle. This reduces the need for additional equipment that a technician must use and increases the efficiency and profitability of the technician. The instrument has a microprocessor, a memory storage for a computer program controlling the microprocessor and for other information, a display screen, a plurality of buttons, a rotary switch capable of being rotated by one finger of the operator of the instrument. The instrument has at least two display screens selections for monitoring and diagnosing a system of the vehicle, and each display screen has at least one operating mode for monitoring and diagnosing a function of the system, and the display screen selections are capable of being selected by the rotary switch.

Dependencies are inferred from the claim text.