利用visible Basic 开发sql数据库备份的功能，程序简单，易学。
上传时间： 2015-05-29
上传用户：songyue1991
Apprehend Screen Capture Component Version 4.2 A non-visible component to capture images. Freeware with source. Includes Four Demos with source and EXE s. 3,550 KB. 10/09/2005
标签： non-visible Apprehend Component component
上传时间： 2015-12-23
上传用户：佳期如梦
Microsoft visible Basic 开发的图书管理程序
标签： Microsoft visible Basic 图书管理
上传时间： 2016-01-13
上传用户：dancnc
Infrared and visible Image Fusion for Face Recognition
标签： Recognition Infrared visible Fusion
上传时间： 2013-11-30
上传用户：mhp0114
IR and visible light face recognition
标签： recognition visible light face
上传时间： 2013-12-20
上传用户：ZJX5201314
a b\program is visible to a
上传时间： 2016-11-18
上传用户：gundan
dct based visible watermarking algorithm
标签： watermarking algorithm visible based
上传时间： 2017-03-23
上传用户：nanxia
visible light communications (VLC) is the name given to an optical wireless communication system that carries information by modulating light in the visible spectrum (400–700 nm) that is principally used for illumination [1–3]. The communications signal is encoded on top of the illumination light. Interest in VLC has grown rapidly with the growth of high power light emitting diodes (LEDs) in the visible spectrum. The motivation to use the illumination light for communication is to save energy by exploiting the illumination to carry information and, at the same time, to use technology that is “green” in comparison to radio frequency (RF) technology, while using the existing infrastructure of the lighting system.
标签： Communication visible Light
上传时间： 2020-06-01
上传用户：shancjb
A light-emitting diode (LED) is a semiconductor device that emits narrow-spectrum incoherent light when forward-biased.The color of the emitted light depends on the chemical composition of the semiconductor material used, and can benear-ultraviolet, visible or infrared. LEDs are more prevalent today than ever before, replacing traditional incandescent andfluorescent bulbs in many lighting applications. Incandescents use a heated filament, are subject to breakage and burnoutand operate at a luminous efficiency of 2% to 4%. Fluorescents are more efficient, at 7% to 12%, but require highdrive voltage and contain mercury, a toxic substance that may be eventually banned in certain countries. LEDs, however,produce light directly through electroluminescence, operate at low voltage and can deliver over 20% luminous efficiency.
上传时间： 2013-11-07
上传用户：xiaoyuer
介绍一种基于C8051单片机的动态心电监护系统。该系统由两部分组成：以C8051F320单片机为核心的数据采集装置和以PC机为平台的分析处理系统。硬件电路功耗低，由单片机自带的USB接口将数据传送给PC机。软件平台采用LabVIEW可视化虚拟仪器系统开发平台，将传统仪器的功能模块集成到计算机中，用户可通过修改虚拟仪器的程序改变其功能。采用USB接口实时传输心电数据，并将数据采集模块设计为计算机外设，使该系统高速快捷、小巧便携。 Abstract: In this design，a low-cost ECG electrocardiogram monitoring system is introduced，which consists of two parts:data acquisition device based on C8051F320and PC terminal as the analysis and processing system.The system is low-power consumption，the data is transmitted to the PC terminal by USB interface of the C8051F320.By using the visible virtual instrument system developing platform LabVIEW，the traditional instruments function modules are integrated into the computer，so the user can modify virtual instrument software to change its function to meet their needs.Using USB in-terface to realize real-time ECG data transmission，in addition，ECG data acquisition module is designed as the computer peripheral，which makes the syetem high-speed and portable.
上传时间： 2013-11-13
上传用户：zhangzhenyu
