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FLOP.DOC
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1988-04-14
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USER'S MANUAL
FLIP-FLOPS will run only on an IBM PC/AT (or
compatible) with a Color Graphics Adapter and at least 128K
of memory.
To start the program, insert the program disk into
Drive A. Type: Flop and <RETURN>.
You will get an introductory screen, then the Main Menu
will appear.
1. Device Option.
This option allows you to select, from a second
menu, any of the four flip-flop types. Each selection will
draw a block diagram of the flip-flop. You are prompted to
enter a 1 or 0 to the two or three input variables to be
input into the flip-flop. Once entered, hit <ESC> and the
new output state will appear. If ready to exit this
portion of the program, hit <INS>.
2. Model Option.
This option allows you to select, from a second
menu, any of the four flip-flop types. Upon selection of
one of the types:
A. You will be asked to enter 5 sets of input
data.
B. After the data is entered, hit <ESC>. If you
wish to enter different data, or exit this
procedure, hit <INS>.
C. If <ESC> was selected, you will get a circuit
diagram of the flip-flop type. The initial
inputs to the flip-flop are determined by the
first data or data set entered into the input
procedure (step A above). At the bottom left
of the screen, the time line is drawn based
upon the 5 sets of input data. Hit any key to
start.
D. You will notice the clock pulse moving along
the bottom left of the screen. There are
three phases to the clock:
1) When the clock pulse goes high, the CP
changes from 0 to 1. You will then
see the next state of the flip-flop
displayed at the bottom right. Hit
any key to continue.
2) As the clock pulse goes from high to
low, the state change occurs. The CP
also goes from 1 to 0.
3) At certain points along the time line,
the input to the flip-flop may change.
E. This process (D above) continues for 5 clock
pulse cycles. Upon completion, you will be
prompted to hit any key to end.
NOTE: When entering data into the Model Option, if
you hit <ESC> before all data has been input, the
remaining data input variables are assigned 0.
You will also notice a change in speed of the movement
of the clock pulse line. This is strickly to allow the
user to visualize the changes occurring within the flip-
flop device.