Calculating device capable of quickly finding a solution in an a

Details Calculating device capable of quickly finding a solution in an a Calculating device capable of quickly finding a solution in an a

1994-06-15

1996-06-18

Envall, Jr., Roy N.

Boots, shoes, and leggings

36471008, G06F 300, G06F 1300

Patent

active

055285244

ABSTRACT:
In a calculating device, a control part performs arithmetic processing by an iterative method based on a mathematical expression inputted by an operator, an initial value for a variable in the mathematical expression, and a solution existing range in which a solution of the mathematical expression is expected to exist. The device has an upper limit memory for storing an upper limit of the solution existing range and a lower limit memory for storing a lower limit of the solution existing range. After calculating a value X.sub.n+1 through an (n+1)th iterative operation from a value X.sub.n resulting from an n'th iterative operation, the control part compares X.sub.n+1 and X.sub.n. When X.sub.n+1 is larger than X.sub.n, the control part causes the lower limit memory to store X.sub.n such that X.sub.n becomes a new lower limit of the solution existing range. Further, when X.sub.n+1 is smaller than X.sub.n, the control part causes the upper limit memory to store X.sub.n such that the X.sub.n becomes a new upper limit. Then the control part discriminates whether X.sub.n+1 is within or out of the solution existing range. When X.sub.n+1 is within the solution existing range, the control part performs a (n+2)th iterative operation, and when X.sub.n+1 is out of the solution existing range, the control part stops the calculation.

REFERENCES:
patent: 4761750 (1988-08-01), Yoshino et al.
patent: 5150316 (1992-09-01), Morita et al.
patent: 5249147 (1993-09-01), Koumo et al.
patent: 5335193 (1994-08-01), Kawawaki
patent: 5381353 (1995-01-01), Oba

Affiliated with

Also associated with

Rating

Calculating device capable of quickly finding a solution in an a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Calculating device capable of quickly finding a solution in an a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calculating device capable of quickly finding a solution in an a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-228411