HP Car 3490A - 1 =r^F, t'"'h."'-l

lvbnitor Dab Flag 5igEl

a ProFm Er

Exec. inprr LOW

) 5 5 ) . pin 6l to ground. RE

u n d i o n A e n d B H I G H )

N o . 2	{ R . n g e
8 LOW, A HIGH}
pins	2 . and 1zL

l2U1 while apglvang

	+5vr-r
	*1o.4ßF_
+ 5 V -	o v l
- 1 =r^F	t'"'h."'-l
p i n 1 1 o f A	.:;LfLr
*r@ld be 0V	when
k LOW and +3
Rem	Enable

Logic circuils, At I 1 U 2 , A t 1 U 3 , A t l