Digital grade averager
OwnerJohn L. Brittaninventor
Life of this patent
Estimating the term…
Abstract
A digital calculator particularly adapted for utilization by teachers in averaging a plurality of grades. The device employs a key board with letters, indicative of letter grades as used in the teaching profession, A+, A, A-, B+, etc. to E, and numbers 0 to 13, a regular calculator chip, circuitry for generating the numbers 10, 11, 12, and 13 and circuitry for decoding the letter grade from the digital output when letter grades are entered and after the grades are averaged. A counter is provided to keep track of the grades entered. All of the calculator chip features are retained at the key board so that the device can be operated as a regular calculator for arithmetic computations as well as averaging grades.
Claims16
A digital calculator apparatus for use by teachers for averaging a sequence of grades in a particular letter grading system, each grade of the system having a preassigned numerical weight, said apparatus comprising:
- a keyboard having a plurality of manually operable grade keys, each key bearing as a label a particular letter grade in said particular system;
- digital display means including a series of discrete signal display units, said display means having a letter grade section, a numerical weight display section and a number of inputs section;
- means for activating said display means such that when a particular grade key is actuated the particular grade of that key is displayed on said letter grade display section, the numerical weight assigned that particular grade is displayed on said numerical weight display section and the cumulative number of grade keys which have been actuated in that particular sequence is displayed on said number of inputs section;
- means for summing the numerical weights of all the particular grade keys which have been actuated in a particular sequence;
- means for dividing said sum of numerical weights by said cumulative number to arrive at an average numerical weight;
- and
- means for decoding said average numerical weight to deterine its letter grade equivalent and for displaying said letter grade equivalent on said letter grade display section.
A digital calculator apparatus for use by teachers for averaging a sequence of grades in a particular grading system, each grade of the system having a predetermined numerical weight, at least some of said numerical weights being expressed in terms of double digit numbers, said apparatus comprising:
- a keyboard having a plurality of manually operable keys, each key bearing as a label a particular grade in said particular system;
- digital display means including a numerical weight display section and a number of inputs section;
- means for activating said display means such that when a particular grade key is actuated the numerical weight assigned that particular grade is displayed on said numerical weight display section and the cumulative number of grade keys which have been actuated in that particular sequence is displayed on said number of inputs section;
- means for summing all the numerical weights relating to a particular sequence of grades;
- means for dividing such sum by the number of grades in the sequence to arrive at the average numerical weight;
- and
- digital display means for displaying said average numerical weight.
Dependencies are inferred from the claim text.