详细说明：一款经典的数字电话设计资料，内含原理图，C编写的源代码。-digital telephone design information, containing drawings, prepared by the C source code.

文件列表:

  dc550_swa2_hwa2_2-189

  .....................\DC550ReleaseNotesSWA2HWA2_2-189.doc

  .....................\feature_requirements

  .....................\....................\keypad_templates

  .....................\....................\................\DC550keypadtemplates1-976.doc

  .....................\....................\menu_screen_strings

  .....................\....................\...................\DC550menuaddendumA2-106.doc

  .....................\....................\...................\DC550MenuScreenStrings_2-054.doc

  .....................\....................\...........\DC550MenuScreenStrings_2-054_French.doc

  .....................\....................\...................\DC550MenuScreenStrings_2-054_Spanish.doc

  .....................\....................\one-touch_messaging

  .....................\....................\...................\DC550OneTouchAddendumA_2-118.doc

  .....................\....................\...................\DC550OneTouchMessagingSpec_1-977.doc

  .....................\....................\product_specification

  .....................\....................\.....................\DC550ProductSpecification_1-967.doc

  .....................\....................\ui_design

  .....................\....................\.........\DC550uiaddendumA2-098.doc

  .....................\....................\.........\DC550uiaddendumB2-102.doc

  .....................\....................\.........\DC550uiaddendumC2-188.doc

  .....................\....................\.........\DC550uidesign2-010.doc

  .....................\hardware

  .....................\........\design

  .....................\........\......\DC550HardwareDesignDocument_2-022.10b.doc

  .....................\........\......\DC550HardwareDesignDocument_2-022.pdf

  .....................\........\......\jack_board

  .....................\........\......\..........\V1_0_Baseline

  .....................\........\......\..........\.............\DC550_JACK_BOARD_V1_0.DSN

  .....................\........\......\..........\.............\DC550_JACK_BOARD_V1_0_BOM.TXT

  .....................\........\......\..........\.............\DC550_JACK_BOARD_V1_0_NET.TXT

  .....................\........\......\..........\.............\DC550_JACK_BOARD_V1_0_notes.txt

  .....................\........\......\..........\.............\DC550_JACK_BOARD_V1_0_XRF.TXT

  .....................\........\......\..........\.............\schematic

  .....................\........\......\..........\.............\.........\cover_sheet.pdf

  .....................\........\......\..........\.............\.........\phone_line.pdf

  .....................\........\......\..........\.............\.........\power.pdf

  .....................\........\......\..........\V1_1_Final

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1.BOM

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1.DRC

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1.DSN

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1.NET

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1.XLS

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1.XRF

  .....................\........\......\..........\..........\DC550_JACK_BOARD_V1_1_changes.doc

  .....................\........\......\..........\..........\schematic

  .....................\........\......\..........\..........\.........\cover_sheet.PDF

  .....................\........\......\..........\..........\.........\phone_line.PDF

  .....................\........\......\..........\..........\.........\power.PDF

  .....................\........\......\main_board

  .....................\........\......\..........\V1_1_Baseline

  .....................\........\......\..........\.............\DC550_MAIN_BOARD_V1_1.NET

  .....................\........\......\..........\V1_2_Interim

  .....................\........\......\..........\............\DC550_MAIN_BOARD_V1_2.BOM

  .....................\........\......\..........\............\DC550_MAIN_BOARD_V1_2.DRC

  .....................\........\......\..........\............\DC550_MAIN_BOARD_V1_2.DSN

  .....................\........\......\..........\............\DC550_MAIN_BOARD_V1_2.NET

  .....................\........\......\..........\............\DC550_MAIN_BOARD_V1_2.XLS

  .....................\........\......\..........\............\DC550_MAIN_BOARD_V1_2.XRF

  .....................\........\......\..........\............\DC550_V1_2_changes.doc

  .....................\........\......\..........\............\DC550_V1_3_notes.txt

  .....................\........\......\..........\............\readme.txt

  .....................\........\......\..........\............\schematic

  .....................\........\......\..........\............\.........\Audio_output.pdf

  .....................\........\......\..........\............\.........\Band_pass.pdf

  .....................\........\......\..........\............\.........\COVER.PDF

  .....................\........\......\..........\............\.........\CPU.PDF

  .....................\........\......\..........\............\.........\High_pass.pdf

  .....................\........\......\..........\............\.........\Jack_board.pdf

  .....................\........\......\..........\............\.........\KEY_PAD.PDF

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