Desk top calculator with access sequence control system for vari

Details Desk top calculator with access sequence control system for vari Desk top calculator with access sequence control system for vari

1989-11-15

1991-11-12

Lee, Thomas C.

Boots, shoes, and leggings

36470716, 36471003, 364706, 3649581, 3649653, 364965, 3649655, 364933, 364955, 3649621, 3649462, 364960, 364928, 364234, 364251, 364260, 3642602, 364DIG1, 364DIG2, G06F 302, G06F 922, G06F 932, G06F 934

Patent

active

050653598

ABSTRACT:
The desk-top calculator in accordance with the present invention comprises a constant access key, a ROM and a control unit. The ROM is arranged such that different types of constants are anteriorly stored therein and the constants are accessed through the operation of the constant access key. The control unit is arranged such that, as well as accessing successively the different types of constants stored in the ROM each time the constant access key is operated consecutively, after one of the contants is accessed through the operation of the constant access key, when another key is operated and the constant access key operated again thereafter, the control unit accesses the constant previously accessed in the first place.
According to the arrangement described above, the operation of such a desk-top calculator is simplified and its operation efficiency is sharply improved.

REFERENCES:
patent: 3760370 (1973-09-01), Cochran
patent: 4107782 (1978-08-01), Cochran
patent: 4713749 (1987-12-01), Magar et al.
patent: 4718029 (1988-01-01), Morino et al.
patent: 4901262 (1990-02-01), Tanaka et al.
patent: 4954977 (1990-09-01), Colombat

Affiliated with

Also associated with

Rating

Desk top calculator with access sequence control system for vari does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Desk top calculator with access sequence control system for vari, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Desk top calculator with access sequence control system for vari will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1017632