May 20, 2002 #1 Y Yeshua Junior Member level 3 Joined May 8, 2001 Messages 31 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 112 Hello, I need a 3x3 keyboard for control a robor arm...i dont know if can use the IC 74C922. How I use it? Any idea? Thank You
Hello, I need a 3x3 keyboard for control a robor arm...i dont know if can use the IC 74C922. How I use it? Any idea? Thank You
May 20, 2002 #2 Moss Full Member level 3 Joined Jul 24, 2001 Messages 170 Helped 9 Reputation 18 Reaction score 2 Trophy points 1,298 Activity points 1,631 First you must look at the manifacturte datasheet. In it you can find example of all nececery connections. If you need only 3x3 keys just miss the last column and last row.
First you must look at the manifacturte datasheet. In it you can find example of all nececery connections. If you need only 3x3 keys just miss the last column and last row.
May 28, 2002 #3 A algilsan Advanced Member level 4 Joined Jan 20, 2002 Messages 116 Helped 7 Reputation 14 Reaction score 6 Trophy points 1,298 Location chile Activity points 1,078 Hello, if you find difficulties to get this chip, you always have the option of use a uController like PIC series 5xx, with only 8 pins.
Hello, if you find difficulties to get this chip, you always have the option of use a uController like PIC series 5xx, with only 8 pins.