Following are descriptions of the controls and how they affect the operation of PC-VFO jr. These displays show the main frequencies that PC-VFO jr is processing at the time. In other words, think of the Displays as a 'buffer' ready to send to the card. This set of controls determines the operational state of the PC-VFO jr to either on or off. The Off button is selected at program start.
Port Enter the port address here in hexadecimal notation.
This set of controls allows the user to set frequencies and control the sweep functions. Numeric Keypad Click on a button to append the digit to the highlighted display. These buttoness affect the highlighted display. THe up button increments the digit to the left of the decimal, the down button decrements it. THe left and right buttons move the decimal accordingly.