Data entry apparatus with dual-mode tabbing function selectable from keyboard

A data entry apparatus is described in which tabbing can be performed normally in one mode to enter tables row by row or vertically in another mode to enter tables column by column. In the particular embodiment described, data to be displayed on a CRT screen are held in a recirculating memory (80) used to refresh the screen. Tab stops are held in a shift register (102) driven in synchronism with the recirculating memory. When the tab key on a keyboard (1) is depressed, the cursor is displayed at the next tab stop to the right on the same line. When a coded tab key is depressed, the cursor is displayed on the next line at the nearest tab stop to the left. A tab character is displayed whenever the tab key (normal or coded) is operated.