Inputs

•  Data Bits - IN7, IN6, IN5, IN4, IN3, IN2, IN1, IN0

• Function Bits - SHIFT (1 = Right, 0 = Left), SH_AMT4, SH_AMT2, SH_AMT1, SH_ARITH, ROTATE

• Data Bits - OUT7, OUT6, OUT5, OUT4, OUT3, OUT2, OUT1 , OUT0

            For testing purposes, you may want to use a protoboard equipped with a voltage source and LED's for output.  Refer to "Pin Layout" below before connecting any pins.
 

Step 1

Connect all NC (no connection) pins, pin #15, and pin #35 to ground (GND).
Connect pin #5, and pin #25 to +5 volts (Vdd).
 

Step 2

Connect pin #28 (SHIFT),  and pin #8 (SH_AMT1) to +5V.
Connect pin #10 (SH_AMT4), pin #9 (SH_AMT2), pin #12 (SH_ARITH), and pin #11 (ROTATE) to ground to test for logical shifting.
 

Step 3

Connect pin #16 (IN7), pin #19 (IN4), and pin #23 to +5V.
Connect pin #17 (IN6), pin #18 (IN5), pin #19 (IN4), pin #20 (IN3), pin #21(IN2), and pin #22 (IN1) to ground.
 

Step 4

Connect pin #4 (OUT7), pin #3 (OUT6), pin #2 (OUT5), pin #1 (OUT4)
pin #40 (OUT3), pin #39 (OUT2), pin #38 (OUT1),  and pin #37 (OUT0) to LED's respectively.
 

Step 5

Re-check pin connections and turn on protoboard.  Observe the output with the LED's and compare the results with the tables below for each of the functions, namely, Logical Shifting , Arithmetic Shifting, and Rotating.
 

Step 6

Repeat above steps with different values for the inputs and again compare with the tables provided below.
 

     Input                                                    Time (ms)

	2	8	12	18	22	28	32	38
SHIFT	1	1	1	0	0	0	1	0
SH_AMT4	0	0	1	0	0	1	1	1
SH_AMT2	0	1	0	0	1	0	1	1
SH_AMT1	1	0	0	1	0	0	1	1
SH_ARITH	0	0	0	0	0	0	0	0
ROTATE	0	0	0	0	0	0	0	0

 Output                                                    Time (ms)

	2	8	12	18	22	28	32	38
OUT7	0	0	0	0	0	0	0	1
OUT6	1	0	0	0	1	0	0	0
OUT5	0	1	0	1	0	0	0	0
OUT4	0	0	0	0	0	1	0	0
OUT3	1	0	1	0	0	0	0	0
OUT2	0	1	0	0	1	0	0	0
OUT1	0	0	0	1	0	0	0	0
OUT0	0	0	1	0	0	0	1	0
	LSR-1	LSR-2	LSR-4	LSL-1	LSL-2	LSL-4	LSR-7	LSL-7

    Input                                                    Time (ms)

	2	8	12	18	22	28	32	38
SHIFT	1	1	1	0	0	0	1	0
SH_AMT4	0	0	1	0	0	1	1	1
SH_AMT2	0	1	0	0	1	0	1	1
SH_AMT1	1	0	0	1	0	0	1	1
SH_ARITH	1	1	1	1	1	1	1	1
ROTATE	0	0	0	0	0	0	0	0

 Output                                                    Time (ms)

 Input                                                    Time (ms)

	2	8	12	18	22	28	32	38
SHIFT	1	1	1	0	0	0	1	0
SH_AMT4	0	0	1	0	0	1	1	1
SH_AMT2	0	1	0	0	1	0	1	1
SH_AMT1	1	0	0	1	0	0	1	1
SH_ARITH	0	0	0	0	0	0	0	0
ROTATE	1	1	1	1	1	1	1	1

Output                                                    Time (ms)