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digital code lock schematic

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5 5 4 4 3 3 2 2 1 1 D D C C B B A A LOCK Pin 5V 5V 5V Title Size Document Number Rev Date: Sheet of DCL - S - 001 1.0 Digital Code Lock A 1 1 Wednesday, August 29, 2007 Title Size Document Number Rev Date: Sheet of DCL - S - 001 1.0 Digital Code Lock A 1 1 Wednesday, August 29, 2007 Title Size Document Number Rev Date: Sheet of DCL - S - 001 1.0 Digital Code Lock A 1 1 Wednesday, August 29, 2007 4x3 Keypad Matrix 1 2 3 4 5 6 7 8 9 * 0 # 4x3 Keypad Layout Lock Pin can be connected to any lock activator. Logic Levels: High - Locked Low - Unlocked R4 10K R4 10K C1 100nF C1 100nF J3 LCD 2x16 J3 LCD 2x16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R2 10K R2 10K U1 AT89C2051 U1 AT89C2051 RST/VPP 1 GND 10 VCC 20 XTAL1 5 XTAL2 4 P1.0/AIN0 12 P1.1/AIN1 13 P1.2 14 P1.3 15 P1.4 16 P1.5 17 P1.6 18 P1.7 19 P3.0/RXD 2 P3.1/TXD 3 P3.2/INT0 6 P3.3/INT1 7 P3.4/T0 8 P3.5/T1 9 P3.7 11 R5 10K R5 10K C2 33pF C2 33pF J1 Column J1 Column 1 2 3 J2 Rows J2 Rows 1 2 3 4 R1 POT R1 POT R6 330 Ohm R6 330 Ohm C4 10uF C4 10uF R3 10K R3 10K C3 33pF C3 33pF D1 LED D1 LED Y1 11.0592MHz Y1 11.0592MHz

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schenatic of digital lock

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Page 1: Digital Code Lock Schematic

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

LOCK Pin

5V

5V

5V

Title

Size Document Number Rev

Date: Sheet of

DCL - S - 001 1.0

Digital Code Lock

A

1 1Wednesday, August 29, 2007

Title

Size Document Number Rev

Date: Sheet of

DCL - S - 001 1.0

Digital Code Lock

A

1 1Wednesday, August 29, 2007

Title

Size Document Number Rev

Date: Sheet of

DCL - S - 001 1.0

Digital Code Lock

A

1 1Wednesday, August 29, 2007

4x3 Keypad Matrix

1 2 3

4 5 6

7 8 9

* 0 #

4x3 Keypad Layout

Lock Pin can be connected toany lock activator.

Logic Levels:High - LockedLow - Unlocked

R410KR410K

C1100nFC1100nF

J3

LCD 2x16

J3

LCD 2x16

123456789

1011121314

R210KR210K

U1

AT89C2051

U1

AT89C2051

RST/VPP1 GN

D10

VC

C20

XTAL15

XTAL24

P1.0/AIN012P1.1/AIN113P1.214

P1.3 15

P1.416P1.517P1.618P1.719

P3.0/RXD 2P3.1/TXD 3P3.2/INT0 6P3.3/INT1 7

P3.4/T0 8P3.5/T1 9

P3.7 11

R510KR510K

C2 33pFC2 33pF

J1ColumnJ1Column

1 2 3

J2

Rows

J2

Rows

1234

R1POTR1POT

R6

330 Ohm

R6

330 Ohm

C410uFC410uF

R310KR310K

C3 33pFC3 33pF

D1

LED

D1

LED

Y111.0592MHzY111.0592MHz

FUZZYSCAN FAMILY Quick Start Guide - Alpha Code...Caps Lock Control “Caps Lock O ff’’State “Caps Lock On’’ State Auto Detect 0 1 2 Caps Lock Release Control “Caps Lock

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