Inventor
FERRIO LINDA J
US4 patents
Patents
4 patentsUS4823311AApr 18, 1989
Calculator keyboard with user definable function keys and with programmably alterable interactive labels for certain function keys
TEXAS INSTRUMENTS INC101 citations93
US4521868AJun 4, 1985
Electronic data processing apparatus with equation operating system having improved exponentiation operators
TEXAS INSTRUMENTS INC2 citations60
US4519045AMay 21, 1985
Electronic data processing apparatus with equation operating system having improved unary operation implementation
TEXAS INSTRUMENTS INC5 citations60
US4495592AJan 22, 1985
Electronic data processing apparatus with equation operating system having implied multiplication of two hierarchical ranks
TEXAS INSTRUMENTS INC2 citations60