linux gpib

In the industrial control test system, often need to use all kinds of programmed instruments, these programmed instruments usually have GPIB, LAN, USB and other hardware interface, the computer through these interfaces can communicate with, so as to achieve automatic measurement, data acquisition, analysis and processing operations. This paper mainly introduces how to communicate with programmed instrument through

This article for the original article, source code for the original code, such as reprint/copy, please in the page/code location clearly marked the original name, author and website, thank you! This software is based on NI-VISA/VISA32 (Virtual instrument software Architecture) of the instrument programming, support RS232, USB, GPIB and LAN communication SCPI instrument programming.First, the software is developed using VS2017 (can also be opened

Tags: System ops LinuxBasic knowledge of computer playing:CPU (operator, Controller), memory, I/O (input device, output device)程序运行模式： 用户空间：user space,us （可执行普通指令） 内核空间：system space （可执行特权指令）POS：Postable Operating System 可移植操作系统 POSIX 可移植操作系统规范运行程序格式：Windows：EXE，库文件dll（dynamic link library 动态链接库）Linux：ELF，库文件so（shared object 共享对象）程序：指令+数据 指令：只读 数据：读写程序：算法+数据结构库调用，系统调用：允许被调用的程序；malloc() 申请内存空间；free() 释放内存空间；编程语言 汇编语言：微码编程（系统级程序员） 系统中某些于硬件相关的特有代码、驱动程序开发； 高级语言：C、C++

Linux services)It is important for Linux users. Disabling unnecessary services can make Linux run more efficiently, but not all Linux services can be disabled. After installing centos Linux today, we found that many services were started when

Linux-(2) Basic file operations in Linux, linux-linux In linux, everything is files, directories are files, and hardware is files. Therefore, basic file operations are especially important. 1. List the contents of the directory: Ls Parameters: -A: displays all files (includ

Logout Exit SystemGedit Text Editor ToolsUname–r View kernel version information, uname–a more detailsCat/proc/cpuinfo viewing CPUsCat/proc/meminfo Viewing memoryHostname Viewing host namesIfconfig eth0 view eth0 IP AddressAlias ls= ' ls–ll ' setting aliasesTo view the path of the current terminal: TTYView current Shell:echo $SHELLAll Shell:cat/etc/shells under the current systemView CentOS System hostname Format: Echo $PS 1Distinguish internal or external commands: Type CDWhich find the locatio

After this period of time to learn, I also have a certain understanding of Linux, today this blog on the previous knowledge of a summary it.The previous Linux learning blog, from the top down is learning in-depth process, my blog link is as follows:First: Analysis of the Linux operating system how the computer starts and how it operatesChapter Two: Analysis of

. As we all know,linux system everything is a file, so each process has its file descriptor, The Nginx process writes its own file descriptor to the Nginx.pid, and we need to tell Nginx to reopen a new log file (the configuration details of the log file can be seen here, simply by letting the log record what. So we need this directive:kill -USR1 `cat ${pid_path}`This instruction means: first cat to Nginx PID, is an integer, and then send the signal

1.The number of files in/usr/include/Linux and/usr/src/Linux/include/Linux is notThe number of folders varies. For example, the/usr/include/Linux does not have the mosules folder, while the/usr/src/Linux/include/LinuxThis folder is available. /Usr/src/

Document directory I. Linux operating system source Ii. Basic Linux knowledge Iii. Introduction to C Programming in Linux This article is original and must be reproduced with the following source:Http://blog.csdn.net/qinjuning Starting from today, I made up my mind to step into the Linux Hall step by step. Wh

Downloadwget http://.....tar.gzExtractTAR-ZXVF xxx.tar.gzcd XXX./configure--prefix=/usr/local/xxx--with-x=/usr/local/xCompileMakeInstallationMake installNginx Start/usr/local/nginx/sbin/nginx Stop/usr/local/nginx/sbin/nginx-s Stop Focus/usr/local/nginx/sbin/nginx-s Reload httpd start, shut down, restart/usr/local/http/bin/apachectl-k [Start | stop ...]Find processPs-ef|grep xxx The above describes the Linux installation software memorandum, i

Becoming a Senior Programmer proficient in Linux programming has always been the goal of many friends. According to statistics from chinacache, the monthly salary of Linux programmers in Beijing is 1.8 times that of Windows programmers, 2.6 times that of Java programmers, and 2.9 times that of Windows programmers. At the same time, the data shows that with the increase of work experience, the income gap bet

The Linux machine doesn't have to clean the hard drive at all, which is why you haven't seen the Linux user defragment the hard drive. Linux file system is a much better file system than Windows FAT, FAT32, NTFS, they can not only set permissions on the file, the implementation of full protection, and can be "used more neatly", "the less the more fragmented"! You

Record what you have learned O (∩_∩) o haha ~MakefileLINK.BIN:START.O MAIN.OArm-linux-ld-tlink.lds-o link.elf $^Arm-linux-objcopy-o binary link.elf Link.binarm-linux-objdump-d link.elf > Link_elf.disGCC Mkv210_image.c-o mkmini210./mkmini210 Link.bin 210.bin%.O:%. SArm-linux-gcc-o [email protected] $%.O:%.cArm-

This article is the best practice of Linux. It aims to help Chinese cabbage learn how to log on to Linux. In the previous article, virtual machines and Linux have been installed. How can I log on locally and remotely? How much do you know? If you want to hear the voice broadcast from Niu every day and want to learn more IT technologies or skills that are not big

[Linux] PHP programmers play with Linux series-easily use email via telnet, and use telnet via linux 1. PHP programmers turn to the Linux series-how to install and use CentOS 2. PHP programmers play with Linux series-lnmp Environment Construction 3. PHP programmers play with

Tags: recompile mingetty Chapter 4 Adding user login capabilities to streamlined Linux systems4.1 Download mingetty and login program source codeThis article uses the CentOS 5.11 Source code is in the official source site http://vault.centos.org can be downloaded,go to http://vault.centos.org/5.11/os/Source/to find the Mingetty and login programs, such as:??the Mingetty and login programs belong to the mingetty-1.07-5.2.2 and util-

(1) linux beginners: linux concepts and Common commands, common linux commandsLinux introduction: Linux is a free, free, and open source operating system. It is also the most famous example of open-source software. Its main purpose is to establish a Unix-like compatible product that can be used all over the world witho

This article is done original, reproduced please specify the source, respect for the original.Writing this article, I refer to some blogs on the Internet:Http://bbs.chinaunix.net/thread-3634524-1-1.htmlHttp://www.bkjia.com/gjrj/800182.htmlAlso refer to the "Linux driver development in detail" 3.4 chapters, to achieve the establishment of their own drive directory.The driving example in this article is: Linux