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A programmer unit includes a keyboard through which an operator may enter data which is responsive to questions displayed on an alpha-numeric display. The programmer automatically leads the operator through a series of steps in which a part is defined as a series of composites and stored in an (L) a

A programmer unit includes a keyboard through which an operator may enter data which is responsive to questions displayed on an alpha-numeric display. The programmer automatically leads the operator through a series of steps in which a part is defined as a series of composites and stored in an (L) array. This definition of the part is then converted to a series of move commands which are stored sequentially in an (O) array. Cutter offset and machine codes are added to the data stored in the (O) array to form a part program which may be read out and stored on punched tape or magnetic tape.

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A programmer unit for developing a part program for a numerical control system, the combination comprising: a memory for storing a plurality of multi-bit words, including a portion designated as an (L) array and a portion designated as an (O) array; data bus means coupled to said memory means for wr

A programmer unit for developing a part program for a numerical control system, the combination comprising: a memory for storing a plurality of multi-bit words, including a portion designated as an (L) array and a portion designated as an (O) array; data bus means coupled to said memory means for writing data into selected locations in said memory and for reading data out of selected locations in said memory; alpha-numeric display means coupled to the data bus means, said display means being operable in response to selected data on said data bus means to display messages for an operator; keyboard means coupled to the data bus means, said keyboard means being operable in response to manual operations by the operator to generate data to the data bus means; and processor means coupled to said data bus means and being operable to read program instructions out of said memory means and in response thereto perform a plurality of functions which comprise: coupling data to said display means which generates a message prompting the operator to select and enter one of a plurality of selectable composite numbers; coupling data from the keyboard means which represents a selected composite number to a location in the (L) array portion of said memory; coupling data to said display means which generates a message prompting the operator to enter a set of geometric data which is associated with the previously selected composite number; coupling data from the keyboard means which represents the set of geometric data to locations in the (L) array portion of said memory; and sequentially reading the coMposite numbers and associated geometric data out of said (L) array portion of said memory and converting each into a set of move codes and associated geometric data which are stored in the (O) array portion of said memory.