We first consider the static clocked (level-sensitive) RS flip-flop
shown in figure 7.20.
The symbol *x* in the following tables represents either the binary
state 0 or 1.

**Figure 7.20:** The clocked RS flip-flop can be constructed
from an RS flip-flop and two additional gates, the schematic symbol
for the static clocked RSFF and its truth table.

The first five lines in the truth table give the static input and
output states.
The last four lines show the state of the outputs after a complete
clock pulse *p*.

Tue Jul 13 16:55:15 EDT 1999