Jawaban:

Page: 20 /21

14. PRECAUTION FOR USING LCM

1. LIQUID CRYSTAL DISPLAY (LCD)

LCD is made up of glass, organic sealant, organic fluid, and

polymer based polarizers. The following precautions should

be taken when handing,

(1). Keep the temperature within range of use and storage.

Excessive temperature and humidity could cause

polarization degredation, polarizer peel off or bubble.

(2). Do not contact the exposed polarizers with anything

harder than an HB pencil lead. To clean dust off the

display surface, wipe gently with cotton, chamois or other

soft material soaked in petroleum benzin.

(3). Wipe off saliva or water drops immediately. Contact

with water over a long period of time may cause polarizer

deformation or color fading, while an active LCD with

water condensation on its surface will cause corrosion of

ITO electrodes.

(4). Glass can be easily chipped or high degree of

precision. Avoid excessive shocks and do not make any

alterations or modifications. The following should be noted.

(1). Do not tamper in any way with the tabs on the metal

frame.

(2). Do not modify the PCB by drilling extra holes,

changing its outline, moving its components or

409 0271 acall Cek_Mode_Awal

410 0273 mov Key_Data,#5H

411 0276 setb Kolom2

412 0278 ajmp Loop_Scan_2

a_2 (32H = 30 + 2)

414 027A jb Baris7,Angka_9

415 027D lcall LTunda

416 0280 acall Tunggu_tombol_dilepas

417 0282 acall Cek_Mode_Awal

418 0284 mov Key_Data,#2H

419 0287 setb Kolom2

420 0289 ajmp Loop_Scan_2

421 028B Angka_9: ;Angka_9 (39H = 30 + 9)

422 028B acall Reset_Keypad

423 028D clr Kolom3

424 028F jb Baris5,Angka_6

425 0292 lcall LTunda

426 0295 acall Tunggu_tombol_dilepas

427 0297 acall Cek_Mode_Awal

428 0299 mov Key_Data,#9H

429 029C setb Kolom3

430 029E ajmp Loop_Scan_2

431 02A0 Angka_6: ;Angka_6 (36H = 30 + 6)

432 02A0 jb Baris6,Angka_3

433 02A3 lcall LTunda

434 02A6 acall Tunggu_tombol_dilepas

435 02A8 mov Key_Data,#6H

436 02AB setb Kolom3

437 02AD ajmp Loop_Scan_2

438 02AF Angka_3: ;Angka_3 (33H = 30 + 3)

439 02AF jb Baris7,Angka_1

440 02B2 lcall LTunda

441 02B5 acall Tunggu_tombol_dilepas

442 02B7 acall Cek_Mode_Awal

443 02B9 mov Key_Data,#3H

444 02BC setb Kolom3

445 02BE ajmp Loop_Scan_2

446 02C0 Bin_Key:

447 02C0 Angka_1: ;Angka_1 (31H = 30 + 1)

448 02C0 acall Reset_Keypad

449 02C2 clr Kolom1

450 02C4 jb Baris7,Angka_0

451 02C7 lcall LTunda

452 02CA acall Tunggu_tombol_dilepas

453 02CC acall Cek_Mode_Awal

454 02CE mov Key_Data,#1H

455 02D1 setb Kolom1

456 02D3 ajmp Loop_Scan_2

457 02D5 Angka_0: ;Angka_0 (30H = 30 + 0)

458 02D5 jb Baris8,Operator

459 02D8 lcall LTunda

460 02DB acall Tunggu_tombol_dilepas

461 02DD acall Cek_Mode_Awal

462 02DF mov Key_Data,#0H

463 02E2 setb Kolom1

464 02E4 ajmp Loop_Scan_2

465 02E6 Operator:

466 02E6 Key_Mode:

467 02E6 acall Reset_Keypad

468 02E8 clr Kolom4

469 02EA jb Baris1,Key_Akar

470 02ED acall Tunggu_tombol_dilepas

471 02EF acall Cek_Mode_Awal

472 02F1 mov R0,#Terima_atas

473 02F3 mov DPTR,#Judul1 ; tampilkan MODE

474 02F6 lcall Pindah_RAM

475 02F9 lcall Baris_atas

476 02FC acall Cek_Mode_Hitung

477 02FE acall Mode

478 0300 setb Kolom4

479 0302 ajmp Next_Data

480 0304 Key_Akar:

481 0304 jb Baris2,Key_Kali

482 0307 acall Tunggu_tombol_dilepas

483 0309 mov sp,#08HPage: 20 /21

14. PRECAUTION FOR USING LCM

1. LIQUID CRYSTAL DISPLAY (LCD)

LCD is made up of glass, organic sealant, organic fluid, and

polymer based polarizers. The following precautions should

be taken when handing,

(1). Keep the temperature within range of use and storage.

Excessive temperature and humidity could cause

polarization degredation, polarizer peel off or bubble.

(2). Do not contact the exposed polarizers with anything

harder than an HB pencil lead. To clean dust off the

display surface, wipe gently with cotton, chamois or other

soft material soaked in petroleum benzin.

(3). Wipe off saliva or water drops immediately. Contact

with water over a long period of time may cause polarizer

deformation or color fading, while an active LCD with

water condensation on its surface will cause corrosion of

ITO electrodes.

(4). Glass can be easily chipped or cracked from rough

handling, especially at corners and edges.

(5). Do not drive LCD with DC voltage.

2. Liquid Crystal Display Modules

2.1 Mechanical Considerations

LCM are assembled and adjusted with a high degree of

precision. Avoid excessive shocks and do not make any

alterations or modifications. The following should be noted.

(1). Do not tamper in any way with the tabs on the metal

frame.

(2). Do not modify the PCB by drilling extra holes,

changing its outline, moving its components or modifying

its pattern.

(3). Do not touch the elastomer connector, especially

insert an backlight panel (for example, EL).

(4). When mounting a LCM make sure that the PCB is not

under any stress such

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