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UNIX环境中光标键的获取算法
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作者 阳道善 《微型机与应用》 1994年第11期21-23,共3页
介绍TERMCAP数据库,给出在UNIX终端原始工作模式下获取光标键的一种算法.
关键词 数据库 光标键 算法 UNIX
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一种解决101键盘专用光标键和编辑键失效的方法
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作者 储志光 《微型机与应用》 1990年第5期47-48,共2页
在大多数汉字系统下,如果使用的是101键盘,那么其中郃的10个专用光标移动键和编辑键及其d(?)e组合失去作用。它们被按下时,屏幕上出现“噜”字。另当Numlock处于OFF状态时,按小键盘中央的“5”键时屏幕上出现“痧”字。众所周知,当键盘... 在大多数汉字系统下,如果使用的是101键盘,那么其中郃的10个专用光标移动键和编辑键及其d(?)e组合失去作用。它们被按下时,屏幕上出现“噜”字。另当Numlock处于OFF状态时,按小键盘中央的“5”键时屏幕上出现“痧”字。众所周知,当键盘上有键被按下时,所产生的二字节的代码(高字节为ASCII,低字节为扫描码)由INT9H键盘中断服务例程送到键盘缓冲区。如果被按下的是功能键则返回的代码高字节为扫描码,低字节是00H。 展开更多
关键词 键盘中断 中断服务程序 光标键
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Turbo C通用图形菜单的设计与实现
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作者 魏文平 马石安 《江汉大学学报(社会科学版)》 2002年第3期65-66,共2页
作为一个大系统的引导部分,菜单在系统中起着重要的作用.针对TurboC没有提供专用的菜单设计命令这一缺憾,利用TurboC的图形功能,探讨了TuroC通用图形菜单的设计与实现.首先介绍了几个主要的函数,然后给出了图形菜单的设计思想,最后讨论... 作为一个大系统的引导部分,菜单在系统中起着重要的作用.针对TurboC没有提供专用的菜单设计命令这一缺憾,利用TurboC的图形功能,探讨了TuroC通用图形菜单的设计与实现.首先介绍了几个主要的函数,然后给出了图形菜单的设计思想,最后讨论了用光标键定位的具体实现算法. 展开更多
关键词 TURBOC 通用图形菜单 C语言 菜单设计 图形函数 光标键定位
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用缩放的矩形框定义图形剪裁区域
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作者 张金翰 《中国计算机用户》 1994年第9期44-45,共2页
在图形剪裁中首先要确定欲剪裁的图形区域,然后才谈得上“搬家”式存盘。习惯上编程者都是用光标键放(缩)一个颜色有别于底图的矩形框,当欲被剪裁的图形全部包容在框内时,矩形框左上角与右下角的坐标值就是剪裁范围。 本人在编制放(缩)... 在图形剪裁中首先要确定欲剪裁的图形区域,然后才谈得上“搬家”式存盘。习惯上编程者都是用光标键放(缩)一个颜色有别于底图的矩形框,当欲被剪裁的图形全部包容在框内时,矩形框左上角与右下角的坐标值就是剪裁范围。 本人在编制放(缩)矩形框程序时,摒弃了C语言的getimage()与putimage()函数而直接利用EGA/VGA图形适配卡上图形控制器中的两个寄存器(口地址为3ceh与3cfh),3ceh与3cfh寄存器是这样使用的:当向3ceh中送入索引号3时,表示选中数据移位功能,在此功能下对3cfh中送的单字节控制字既能表述锁存器中数据循环右移的位数,又能表述新写入的图形数据与锁存器内数据“与”、“或”、“异或”或“重写”的操作方式(比如,送0x18,是不移位只“异或”;送00是不移位仅“重写”)。因此利用这两个寄存器对编写控制矩形框放缩程序会带来很大的便利。 经实验,先分别向3ceh、3cfh口送入0x03与0x18后,再画一直线(或一圆)可使该直线(或圆) 展开更多
关键词 图形剪裁 光标键 C语言
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Investigation of Dispersion Compensation in 2.5 Gbit/s OOK Label and 40 Gbit/s RZ-DPSK Payload Optical Label Switching System Based on Optical Carrier Suppression and Separation
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作者 HUANG Yan XIN Xiang-jun ZHANG Qi YU Chong-xiu SHI Yan HU Xiao-ming LIU Bo 《Semiconductor Photonics and Technology》 CAS 2009年第1期25-29,44,共6页
Three dispersion compensation schemes of an optical label switching transmission system were investigated, which employs 40 Gbit/s return zero differential phase-shift keying(RZ-DPSK) payload labeled with 2.5 Gbit/s... Three dispersion compensation schemes of an optical label switching transmission system were investigated, which employs 40 Gbit/s return zero differential phase-shift keying(RZ-DPSK) payload labeled with 2.5 Gbit/s on-off keying(OOK) signal based on the optical carrier suppression and separation(OCSS) techniq ue, In the system, proposed are the receiver sensi ti vity oS payload and label, achieving -- 32. 4 dBm and --38.5 dBm, respectively. Using the optimal dispersion compensation scheme, after transmitted over 160 km and 320 km SMF respectively, the label can be recovered without power penalty, while the payload can be recovered with less than 2 dB and 5 dB penalty, respectively. 展开更多
关键词 optical carrier suppression and separation optical label switching return zero differential phase-shift keying symmetrically dispersion compensation
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A DEA MODEL FOR IDENTIFYING CRITICAL INPUT-OUTPUT PERFORMANCE MEASURES 被引量:4
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作者 Jie WU Liang LIANG 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2012年第2期275-286,共12页
In this paper,the authors propose a new model for identifying the critical input-output combinations for each DMU.A real-world application case of 21 international tourist hotels(ITHs) is used to illustrate the propos... In this paper,the authors propose a new model for identifying the critical input-output combinations for each DMU.A real-world application case of 21 international tourist hotels(ITHs) is used to illustrate the proposed approach. 展开更多
关键词 Data envelopment analysis (DEA) EFFICIENCY input-output combination performance.
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Analyte-responsive fluorescent probes with AIE characteristic based on the change of covalent bond 被引量:4
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作者 Min Xu Xudong Wang +4 位作者 Quan Wang Qinyu Hu Kaixun Huang Xiaoding Lou Fan Xia 《Science China Materials》 SCIE EI CSCD 2019年第9期1236-1250,共15页
It is important for the determination of biologically and/or environmentally relevant species by utilization of fluorescent probes. Conventional fluorescent probes are subjected to the influence of aggregation-caused ... It is important for the determination of biologically and/or environmentally relevant species by utilization of fluorescent probes. Conventional fluorescent probes are subjected to the influence of aggregation-caused quenching that is limiting their application due to low selectivity as well as photobleaching. Additionally, quencher pairs are usually introduced in the design of these probes, which lead to the complex synthetic procedure. A novel class of fluorogens with aggregation-induced emission (AIE) characteristic provide a solution to address the dilemma. By taking advantage of the unique characteristic of AIE fluorogens, specific turn-on probes have been developed via combination with recognition components, exhibiting low background, good selectivity and outstanding photostability. This review focuses on the development of fluorescent probes with AIE characteristics via the bond cleavage as well as formation strategy. 展开更多
关键词 fluorescent probe aggregation-induced emission CLEAVAGE FORMATION covalent bond
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