[SOLVED] seven segment in microcontroller

hi guys..
can anyone help me with this circuit..

i am aiming to have a program that will give ang output that only 1 seven segment will turn on at a time..

thank you

use the ground (from your sch) to select wich seven segment you wnt to use.

tnx dzakriel..

by the way..wat if i put switch...were would be the best place i put the switch..so i can control the output in seven segment

well if you want to use a switch, than this switch used to connect the ground or to the power of each seven segment, so, to make it simple, even you actually give the same output to all of the three seven segment, if you only activated 1 sevent segment, you make an illusion as if you able to control them individually...just by controlling the seven segment need to be activated, the vcc or the ground.

i use 4seven segment for this proj..and my prof instruct us to use 5switches to control the outpur from seven segment.the scenario would be:

Let’s try to mimic what happens in an ATM withdrawal. Add five switches to your current hardware. The four switches represent the digits “1”, “2”, “3” and “4”
respectively. A user is to input its PIN using the four switches. (The correct PIN is to be placed in the source code prior to building). Once a PIN is already inputted by the
user, the fifth switch is pressed to inform the system that the PIN is already entered.

The scenarios are as follows:
a. If the correct PIN is inputted, the four switches will now be used to input the amount of withdrawal. (Note that at this mode, each switch controls the digit
display of only one 7-segment) If the user is satisfied with the amount, the fifth switch is pressed to denote end of transaction. Once this is pressed, the
7-segments will blink showing the amount withdrawn.

Did the professor specify what type of switches to use for switch 1-4? If each digit of the PIN is to be a decimal number and the withdrawal amount can be up to $99.99 or $9,999 - perhaps you might need BCD Thumbwheel switches.

yes...we use tact switch for the 4switches..
and the withdrawal amout is up to 0001 to 4444

can u help me. If the stop button is pushed, metrobus will stop at the next station. There are four doors and each door is related with only three buttons (so 12 buttons in the bus). When a button is pushed, the related door should be opened.
If there is no stop button caveat (warning), the bus passes the next station but it announces the station name (or just show the station number by 7-segment display)

hi
how to use the 4x3 keypad?