hardware | 易学教程

Java Hardware Interrupt Handling

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问题 I would like to know if it is possible to automatically invoke a Java method when a hardware interrupt is raised. 回答1: There may be an alternative. I'm doing something similar: In an application I monitor 4 mice for clicks. Those clicks generate interrupts but I'm happy enough not to deal with them directly from Java. Under Linux, it turns out there are device files ( /dev/input/mouse# ) that spew a bunch of characters when something happens with the mouse. I have a Thread for each one with a

HTML 5 local computer hardware specs

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Is there a way to use HTML 5 to access local system hardware details? I'm looking specifically for attributes about CPU, RAM, Disk space, Video card information, Browsers available and plug-ins (with verson information). Ultimately, I am trying to determine if I can build a tool to check a machine for hardware requirements to run software but do so without needing to actually install anything on the machine. Any help is much appreciated! Thanks! Optimus Prime I don't know if HTML5 can help you but javascript can, more information on these websites. http://ajaxian.com/archives/jpu-javascript

Getting computer hardware information

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问题 I tried to get all information about a computer by python but there is no good library to find something like monitor or keyboard or details of graphic card. Is it possible to get list of hardware or devices of computers? 回答1: I personally find the psutil library interesting for monitoring everything that is going on on your system: https://github.com/giampaolo/psutil Moreover, you might have a look at the platform lib, which you can use to gather information, guess what, platform, yes. https

If statement and assiging wires in Verilog

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New to Verilog and trying to figure out the basics of assiging wires based on combination logic. I have: wire val; wire x; wire a; wire b; always @* begin if(val == 00) I want to assign x = a if(val == 01) I want to assign x = b end where a and b are wires with values - and x is a wire going into a register. If you can please point me in the right direction to what I need to change, it would be much appreciated. Thank You. First thing to ask is: are you trying to use those wires as inputs? Or are you using those as connections? Second thing: Do you want a synthesizable code? And you cant

Get Serial Number of Boot Drive and other info

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问题 I am trying to get the serial number of the boot drive and I haven't figured out how to do it. I do understand that the partition =\= hard drive but I'd like the serial of the boot partition. This what I have so far: var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia"); int i = 0; foreach (ManagementObject wmi_HD in searcher.Get()) { // get the hardware serial no. if (wmi_HD["SerialNumber"] == null) richTextBox1.Text += "None" + Environment.NewLine; else

By code, how can I send a hard disk drive to sleep

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问题 I have lots of hard disk drives in my computer (7). When they are not used the power option send them to sleep after a while. But because everything makes a lot of noise I would like to send them to sleep when I want, not just after the default system timeout. On Windows (XP and up), preferably in C#, How can I send a disk to sleep by code? Thanks a lot in advance for your help... 回答1: I do not know of the API to do this directly but there are tools that can do it. One that I have seen is

Driving DTR with System.IO.Ports.SerialPort in .NET

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I have a sensor that uses RS232 over USB to receive commands from a PC and send data to the PC. The sensor needs to be reset (using the DTR line) before a command can be sent to it. I tried to use the built-in .net serial port, but it does not seem to drive the DTR line as expected. I am beginning to wonder if the DTREnable property actually drives the DTR pin, or if it only enables it during handshaking. Other SerialPort implementations that I could find on the web also uses the Win32 API, but I find it very difficult to close the port with these implementations. If I step through code I can

Benefits and Hindrances of Regular Server Reboots [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . In the ears of working in multiple teams, I've met multiple infrastructure managers that instituted a policy of weekly server reboots. As a developer, I was always against the policy - it seems that this is a hack to work around software bugs and hardware instabilities, instead of correcting them. What are the

How can I get processor and hard disk manufacturing serial numbers and ids?

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How can I get the following hardware attributes using Matlab? Motherboard manufacturing serial number Processor Id Processor manufacturing serial number Hard disk Id Hard disk manufacturing serial number And is there any function or class responsible for detecting attributes of other machine hardware components attributes? I know it can be done using system or console commands, but I don't know how. However, I prefer to know both two ways, the one using Windows console commands, and the one without using it. This is a way to get hard disk serial number using console command from matlab: %//

Incrementing a counter variable in verilog: combinational or sequential

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I am implementing an FSM controller for a datapath circuit. The controller increments a counter internally. When I simulated the program below, the counter was never updated. reg[3:0] counter; //incrementing counter in combinational block counter = counter + 4'b1; However, on creating an extra variable, counter_next, as described in Verilog Best Practice - Incrementing a variable and incrementing the counter only in the sequential block, the counter gets incremented. reg[3:0] counter, counter_next; //sequential block always @(posedge clk) counter <= counter_next; //combinational block counter