matthewwren
New Member
I am building a very simple calculator, but need help with one small area.
I have 4x4013 chips to represent a 4 bit number. When I press, for example, 3 on the number pad I want to set the 4013 chips to the correct values. That is to say:
FF...... 1 2 4 8
============
Value.. 1 1 0 0
To start with I tried to set a 4013's Q to high by wiring both the D and Clock to the switch, imagining that when I hold down the button Q will go high, but that doesn't work. I'm not sure why. Anyone got any ideas on how to achieve the setting of flip flips according to which value button i press?
I have 4x4013 chips to represent a 4 bit number. When I press, for example, 3 on the number pad I want to set the 4013 chips to the correct values. That is to say:
FF...... 1 2 4 8
============
Value.. 1 1 0 0
To start with I tried to set a 4013's Q to high by wiring both the D and Clock to the switch, imagining that when I hold down the button Q will go high, but that doesn't work. I'm not sure why. Anyone got any ideas on how to achieve the setting of flip flips according to which value button i press?