.

. . . . . . . . . . .

. / . / / . .

" "

" "

.

.

.

:

.

.

.

.

.

.

.

, . , . , . , . , . , .

. : .

.

.

, .

, . , . , .

. : .LPT , . , . , .

, . , .

. : . , . , . , . , . , .

, . , , .

. : .

, . , . , .

, : . , : . , : . , . , . , . . : .

, . , . , .

, .

, .

. : . , . , .

. . . . . .

. .

. .

. .

, :

) ( ) ( . ".

"

, :

.

" " "

:

. ) (

: . : .

.

. .

, :.

Dot Matrix LED Displays

.

- .

: ++.- .

- .

- .

, : :

-

.

- - - - - . . .

.

, :

.

.

:

System Programming

, :

Using Computer

How To Control To The Outside World :

- - Interface . - . .

- .

, :

- .

: .product . . .- .

, : .

)(

.

:

.

. . .

. . .

:

. . .

.

:

:

: .

.

: .

.

: .

.

.

: .

:

.

. . . . .

:

: .

.

: .

* : . , , )( )( )( 7*5 74LS138 Decoder 74LS164 Shift Register . . . . . . . . . .

74LS373 Latch

,

74LS04 Not Gate

74LS76 JK Flip Flop 100 Resistor

. . . . UTP . .

,

:.

. . .

.

.

. . .

, :

.

,

" : . ".

. . Portable .- .

LPT

, :

Robots .. ...

.

Microcontroller EEPROM ) Centronics Centronics (.

)52 (DB . ISA/PCI

4991 IEEE 12345Compatibility Mode Nibble Mode Byte Mode ) EPP ( Enhanced Parallel Port ) ECP ( Extended Capabilities Port

, :

4821 :

) . Standard Parallel Port (SPP ECP

EPP .

50KByte/S 150KByte/S Nibble Byte Nibble 4 : Byte 8 EPP Intel Xircom ) (

Compatibility Centronics

.

Zenith Data System EPP 7.1 EPP 4821 IEEE 7.1 EPP 9.1 EPP Handshaking ... Strobing EPP 500KB/S 2MB/S

EPP ECP EPP

ECP

Handshaking Common Glue Logic .

,

) ( Data Lines port IBM Control Lines 2/ PS Output ) Read-Back-Register (

Status Line Standard Parallel

.TTL

) ( Centronics 52DB

, :

52 DB :

52 DB : - ) ( - ) ( -

. .1 2 3 4 5 6 7 8 01 11 21 31 41 51 61 52-81 71 9

nStrobe 0Data 1Data 2Data 3Data 4Data 5Data 6Data nAck Busy 7Data Paper-Out Linefeed nSelect-Printer Ground nInitialize nError Select

:In/Out Out Out Out Out Out Out Out Out In In In In/Out In/Out In/Out In In

- 0-Control 0-Data 1-Data 2-Data 3-Data 4-Data 5-Data 6-Data 6-Status 7-Data

Yes No No No No No No No No Yes No No No No Yes Yes No

7-Status 5-Status 1-Control 2-Control 3-Control 3-Status 4-Status

, :

: - . - . - . .....

) (

) ( : 0- Data 5 .

, :

3BCh ) .( BIOS

378h 1 LPT 2 LPT 278h 278h 378h h

.

3BCh 3BFh 378h 37Fh 278h 27Fh

ECP 2 LPT 1LPT

1 LPT2 LPT3 . LPT BIOS 3BCh 278h 3BCh 2 LPT

Bios

1 LPT 378h 2 LPT 378h . 278h 3. LPT

1 LPT

Jumpers 1 LPT2LPT 1 LPT Line PrinTer 1 LPT 378h 2 LPT 278h 3BCh 1 LPT 378h 1 LPT 278h 1 LPT 2 LPT 3 LPT 2 LPT .

1 LPT 1 LPT

BIOS 0000:040A 0000:040C 0000:040E 8040:0000

Lookup Table .

1 LPT 3 LPT 4 LPT 2LPT

BIOS 2 .

Base Address

:

: 1 LPT h

1 2 .

378h 379h BIOS Data Area . 37ah .

>#include #include #include #include #include #include #include #include