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编辑器/阅读器 Normally a list view is updated by a user directly by selecting a list view item and then editing or
Normally a list view is updated by a user directly by selecting a list view item and then editing or deleting it. New items are usually added at the bottom of the list. This works fine since the user knows which items have been changed or deleted and where the new items will pop up. A drawback of it ...
电源技术 智能电表和智能电网手册
Abstract: Investment in smart meters and smart grid end equipment continues to grow worldwide as countriestry to make their electric delivery systems more efficient. However, as critical as the electric deliveryinfrastructure is, it is normally not secured and thus subject to attack. This article ...
电源技术 DN460双输出降压稳压器优化效率
 
The LTC3546 is a dual output current mode buck regulatorwith fl exible output current partitioning. Beyondthe advantages normally associated with dual outputregulators (reduced size, cost, EMI and part count, withimproved effi ciency), the LTC3546’s outputs can bepartitioned for eit ...
电源技术 高电压,低噪音,DCDC转换器
 
Photomultipliers (PMT), avalanche photodiodes (APD),ultrasonic transducers, capacitance microphones, radiationdetectors and similar devices require high voltage,low current bias. Additionally, the high voltage must bepristinely free of noise; well under a millivolt is a commonrequirement ...
单片机编程 NXP P89LPC901单片机汽车起动保护控制器设计
在汽车发动机起动时，若发动机起动后起动机不能及时断电，将会烧毁起动机或损坏飞轮齿环；若变速器不在空档位置起动，则起动机的瞬间动力将使汽车位移，还可能引起交通事故和人身安全。为此介绍一种利用NXP P89LPC901单片机控制的汽车起动保护控制器，通过检测汽车起动开关、变速箱档位、发动机转速，实现对汽车发动机起动 ...
单片机编程 An easy way to work with Exter
Internal Interrupts are used to respond to asynchronous requests from a certain part of themicrocontroller that needs to be serviced. Each peripheral in the TriCore as well as theBus Control Unit, the Debug Unit, the Peripheral Control Processor (PCP) and the CPUitself can generate an Interrupt Requ ...
汇编语言 可在系统引导时工作的RootKit,较简单 1) It s very small.The basic framework is just about 100 lines of assembly
可在系统引导时工作的RootKit,较简单
1) It s very small.The basic framework is just about 100 lines of assembly code.It supports 2000,XP,2003
2) It patches the kernel at runtime(no files are patched on disk).(basic version has this code removed , so as others could understand it easily).
3) BOOT KIT ...
单片机开发 * This a software code module for a time-of-day clock object. * The clock may be fixed 12-hour, fi
* This a software code module for a time-of-day clock object.
* The clock may be fixed 12-hour, fixed 24-hour, or dynamically
* configurable between these two types. Clock data can be accessed
* as a binary number representing the number of minutes since midnight
* or a BCD number formatted acco ...
单片机开发 * DEFINITION * This a set of math functions that deal with time. The functions accept * 4-digit
* DEFINITION
* This a set of math functions that deal with time. The functions accept
* 4-digit time values and 4-digit time of day values. Time values are
* interpreted as hours-minutes and are valid if all digits are numeric and
* 9 or less, except the second-to-last digit must be 5 or less. T ...
软件工程 Debugging is a fascinating topic no matter what language or platform you re using. It s the only par
Debugging is a fascinating topic no matter what language or platform you re using. It s the only part of software development in which engineers kick, scream at, or even throw their computers. For a normally reticent, introverted group, this degree of emotion is extraordinary. Debugging is also the ...