Electronic calculator

Details Electronic calculator Electronic calculator

1990-03-02

1991-09-17

Shaw, Dale M.

Boots, shoes, and leggings

G06F 300

Patent

active

050501151

ABSTRACT:
An electrical calculator includes an inputting element for inputting numerical data. This input may include at least first and second unit data which are in the same category but are different levels such that the first unit is higher in level than the second unit. The calculator inhibits the entering of the higher level unit data when the higher level unit data is inputted immediately after entering numerical data followed by a lower level unit data.

REFERENCES:
patent: 3973113 (1976-08-01), Goldsamt
patent: 4064398 (1977-12-01), Kishimoto et al.
patent: 4081859 (1978-03-01), Goldsam et al.
patent: 4100603 (1978-07-01), Boyd
patent: 4282514 (1981-08-01), Elkin et al.
patent: 4488250 (1984-12-01), Lipsey et al.
patent: 4545022 (1985-10-01), Hughins
patent: 4744044 (1988-05-01), Stover et al.
patent: 4860233 (1989-08-01), Pitchford

Affiliated with

Also associated with

Rating

Electronic calculator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic calculator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic calculator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1922489