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A Discussion on Solution of Telephone Control(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
1998年03期
Page:
13-15
Research Field:
Publishing date:

Info

Title:
A Discussion on Solution of Telephone Control
Author(s):
Chen Hejuan
School of Mechanics,NUST,Nanjing 210094
Keywords:
telephones recording cont rol systems r ecognit io n
PACS:
TN916
DOI:
-
Abstract:
T his paper discussed a solut ion to telephone contr ol. It presents a har dw are co nt rol system externally co nnected to the telephone set to prevent the long distance cal l made by facility-rest ricted user. T he sy stem can recog nize the user ident ity, display and recor d the called telephone directory number and the durat io n of conversation. Besides, the sy stem ar chitecture, pr inciple of circuit desig n and it s implementation are also presented in detail .

References:

1 沈德金. MCS-51 系统列单片机接口电路与应用程序实例. 北京: 北京航空航天大学出版社, 1990
2 何立民. 单片机应用文集( 一) . 北京: 北京航空航天大学出版社, 1991

Memo

Memo:
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Last Update: 2013-03-29