本人拿得一个旧的MKS625A-13127真空计，没有说明书，只有接线端子上标记了，不知如何使用，请高手指导，谢谢！端子上依次为+15 V-15V0utcomcom两个com还不是导通的。[/td
2017-07-29 10:16
用来做压力校准用的，类似于GE和MKS，能稳定压力输出。***
2017-11-19 12:46
怎么调用库函数 并且输入指令CompressibilityFactor("air","TP","mks",293.15,0.101)
2015-01-22 13:43
：09.329Z | MKS | W110：GLWindow：无法保留主机GPU资源2016-04-27T01：44：09.339Z | VMX | I120
2018-10-08 14:07
数码管显示初始化数值，按下Left键，数值自动减一，按下Right键，数值自动加1
2016-09-04 09:27
图片讲解教你识别各种电容器
2021-06-08 06:53
`刚开始接触电子技术，只认识一些基本的元件，照片里圈出的元件应该是电容，但是是什么类型的电容呢？求大神解答，谢谢！`
2017-05-16 11:57
2016-09-01 22:36
大家好！我使用FPGA XC3S1400AN（Spartan-3AN系列）。我尝试将两个字节写入（读取）内部闪存（ISF）。我的接口是UART Master SPI（简单FPGA逻辑）ISF。写入模式：页面编程通过缓冲区（将缓冲区写入缓冲区与页面编程与内置擦除命令相结合）通过缓冲区1（0x82命令代码）表4-1和表4-6 ug333。读取模式：随机读取（随机读取字节） -addressedlocations，所有读取操作均为33 MHz或更低） -0x03命令代码（表3-1和表3-3以及图3-3 ug333）。波形图显示为附加“fig01.png”。我使用16-位字（通过UART和主SPI）。因此TW12 = TR12 = TW23 = TR23 = TW34 = TR34 = TW45 = TR45 = TW56 = TR56 = 0. Clk = 32 MHz，VS [2..0] = {1,0,1}。不幸的是，Wtiting / reading操作工作偶尔正确的。但主要是我的设计不能正常工作（我读了所有'0xFFFF ...'：所有数字都是'1'二进制）。我想这个问题是不符合要求的时间Tpep = 17 ms（或最大40 ms） - 表4-4 ug333。波形上的任何时间间隔（在“fig01.png”上）必须相等（或更多）到Tpep进行ISF的稳定写入/读取操作？是时间'TW12'（写入事务的第1个字节代码命令之后）？或者它是'T sleep'（写入和读取事务之间的时间）？它是什么？谁在他们的设计中使用了ISF（内部简单的主SPI逻辑）？我的错误在哪里？提前感谢您的回复！最好的问候，EugenP.S。：读取状态寄存器（表6-1命令代码0xD7）始终可以正常工作。阅读ID（家庭代码/内存密度代码 - 命令代码0x9F）也有效.P.P.S。：对不起，我的英文不好。________________________________________________________错误制定的问题是答案的一半以上来自于谷歌翻译以下为原文Hello all!I use board with FPGA XC3S1400AN (Spartan-3AN family).I try to write and read two bytes into (from) internal flash memory (ISF).My interface is UARTMaster SPI (simple FPGA logic)ISF.Write mode: Page Program Through Buffer (Combines Buffer Write with Buffer to Page Program with Built-in Erase command) through Buffer 1 (0x82 command code) table 4-1 and table 4-6 ug333.Read mode: Random Read (Reading bytes from randomly-addressedlocations, all read operations at 33 MHz or less) - 0x03 command code (table 3-1 and table 3-3 and figure 3-3 ug333).Waveform diagram is shown in attach "fig01.png".I use 16-bits words (through UART and Master SPI). Therefore TW12 = TR12 = TW23 = TR23 = TW34 = TR34 = TW45 = TR45 = TW56 = TR56 = 0. Clk = 32 MHz, VS[2..0] = {1,0,1}.Unfortunately Wtiting/reading operations work correctly occasionally. But mostly my design does not work properly(I read all '0xFFFF...': all digits are '1' binary). I suppose that problem is in non-compliance of required time Tpep = 17 ms(or 40 ms max) - table 4-4 ug333.Which of the time interval on the waveform (on "fig01.png") must be made equal (or more than) to Tpep for stable write/read operations into/from ISF? Is it time 'TW12' (after 1th byte code command of write transaction)? Or is it 'T sleep' (time between write and read transactions)? What is it?Who used the ISF (with internal simple master SPI logic) in their designs? Where is my error?Thanks in advance for any reply! Best regards,EugenP.S.: Reading of the status register (table 6-1 command code 0xD7) always works correctly. Reading ID (Family Code / Memory Density Code - command code 0x9F) works too.P.P.S.: Sorry for my bad english.________________________________________________________Correctly formulated question is a one-half of answer
2019-06-26 11:13
哪位指导下 在LCD12864 在初始化前 显示 welcome
2016-09-01 11:13
