Working with Shift Register

1const int DataPin = 2;
2const int ClockPin = 3;
3const int LatchPin  = 4;
4
5void setup()
6{
7	pinMode (DataPin, OUTPUT);
8	pinMode (ClockPin,  OUTPUT);
9	pinMode (LatchPin, OUTPUT);
10}
11
12void loop()
13{
14digitalWrite  (LatchPin, LOW);
15shiftOut (DataPin, ClockPin, LSBFIRST, 255);
16digitalWrite  (LatchPin, HIGH);
17delay (1000);
18digitalWrite (LatchPin, LOW);
19shiftOut  (DataPin, ClockPin, LSBFIRST, 0);
20digitalWrite (LatchPin, HIGH);
21delay (1000);
22}

1const int DataPin = 2;
2const int ClockPin = 3;
3const int LatchPin  = 4;
4
5byte Data = 0;
6
7void setup()
8{
9  pinMode (DataPin, OUTPUT);
10  pinMode (ClockPin, OUTPUT);
11  pinMode (LatchPin, OUTPUT);
12}
13
14void  loop()
15{
16  shiftWrite (0,1);
17  delay(1000);
18  shiftWrite (1,1);
19  delay(1000);
20  shiftWrite (2,1);
21  delay(1000);
22  shiftWrite (3,1);
23  delay(1000);
24  shiftWrite (4,1);
25  delay(1000);
26  shiftWrite (5,1);
27  delay(1000);
28  shiftWrite (6,1);
29  delay(1000);
30  shiftWrite (7,1);
31  delay(1000);
32  shiftWrite (0,0);
33  delay(1000);
34  shiftWrite (1,0);
35  delay(1000);
36  shiftWrite (2,0);
37  delay(1000);
38  shiftWrite (3,0);
39  delay(1000);
40  shiftWrite (4,0);
41  delay(1000);
42  shiftWrite (5,0);
43  delay(1000);
44  shiftWrite (6,0);
45  delay(1000);
46  shiftWrite (7,0);
47  delay(1000);
48}
49
50void shiftWrite(int Pin, boolean State)
51{
52  bitWrite  (Data, Pin, State);
53  digitalWrite (LatchPin, LOW);
54  shiftOut (DataPin, ClockPin,  MSBFIRST, Data);
55  digitalWrite (LatchPin, HIGH);
56}