Abstract: An adhesive backed label is perforated or scored along its mid-line. The same label either can be used as a standard adhesive label or it can be folded along its midline to capture the ends of a string and can be used as a tag label.

Abstract: A hand-held, programmable, electronic calculator is capable of performing a larger number of functions than the number of keys on its keyboard and has one or more prefix keys to allow one function key to initiate more than one function. Each key generates a unique key code when it is depressed, and the calculator may be programmed by storing a series of the key codes in a memory. Memory space can be saved by generating unique merged codes to represent the combination of a prefix key and a function key, and storing this single merged code rather than the two key codes.

Abstract: An apparatus is disclosed comprising an electronic wristwatch and a multifunction electronic calculator in a single wrist mountable case having a common display and keyboard. The watch portion of the watch/calculator includes time of day, calendar, stopwatch and alarm functions. Each of these functions can be controlled from the keyboard on the watch/calculator. The electronic calculator portion of the watch/calculator performs the four standard arithmetic functions: add, subtract, multiply and divide; and has an extra storage register. The calculator portion can perform calculations with scalar quantities entered via the keyboard or stored in the calculator as well as calculations with time interval and real time data from the watch portion. During the time that calculations are not being performed the calculator goes into a sleep or inactive mode in order to minimize the amount of battery power used by the watch/calculator.

Abstract: A hand-held, programmable, electronic calculator is capable of performing a larger number of functions than the number of keys on its keyboard and has one or more prefix keys to allow one function key to initiate more than one function. Each key generates a unique key code when it is depressed, and the calculator may be programmed by storing a series of the key codes in a memory. Memory space can be saved by generating unique merged codes to represent the combination of a prefix key and a function key, and storing this single merged code rather than the two key codes.

Abstract: A battery-powered hand-held calculator for performing arithmetic, trigonometric, and logarithmic functions and displaying the results thereof is provided with the capability of automatically storing the last displayed number in an auxiliary storage register whenever the next succeeding function to be performed would destroy that number. That number may be recalled from the auxiliary storage register by simply depressing a prefix key and a Last-X function key.

Abstract: The battery powered hand-held calculator for performing the arithmetic, trigonometric and logarithmic functions disclosed herein includes a factorial function which conveniently calculates factorials of positive integers.

Abstract: A calculator has one or more keys which initiate the performance of user-defined subroutines. When the calculator is turned on, the calculator memory is programmed with a predetermined subroutine which may subsequently be changed or replaced by the user.

Abstract: A battery powered hand-held calculator for performing arithmetic, triganometric and logarithmic functions and displaying the results thereof is provided with a clock mode which performs the function of a clock and displays real time or the function of a stopwatch and stores and displays the times at which recorded events have taken place.

Abstract: A battery powered hand-held calculator is disclosed which includes a built-in metric to U.S. conversion function for converting units from one system to the other; a degrees-minutes-seconds conversion function for converting angles or units of time from degrees-minutes-seconds to the decimal system and conversely.