After the Apple machine power on, the bottom will carry out a series of self-test, if you can pass, back to hear the famous "boom ... ", and then boot the OS from openfirm.
If the self-test encountered a problem, will be issued 1 to 5 beeps, the length of the sound represents a different problem, the following is the meaning of these sounds, for reference:
On the earlier point of the machine, including: Blue White g3,pcig4, Big black G3PB (Bronze keyboard and Pismo)
1
The first step: first, open the Beep beep page, you can see the various categories on the homepage, you can see the contents of your collection, downloads and Knights list.
Step two: In the latest update of the Beep beep, you can see the latest updates, all kinds of wonderful comics.
The third step: In ad
Delphi defines the beep method in the sysutils unit and can make a sound, which is generally used for reminder and debugging.
Beep is actually the called API function: messagebeep (mb_ OK );Messagebeep can be used to call different audio files in the following ways:
Messagebeep (mb_ OK); messagebeep (mb_iconhand); messagebeep (messages); {This does not sound, do not know why} messagebeep (messag
This article mainly introduces the python calls the machine horn beeps (Beep) The method, the example analyzes the python to invoke the WinSound module the use skill, needs the friend to be possible to refer to under
The example in this article describes the way Python invokes the Beep (Beep) of the machine horn. Share to everyone for your reference. The specif
Transferred from http://lsdn.lynnstudio.net/turn-off-the-annoying-windows-xp-system-beeps/
In Windows applications, the Beep function is sometimes needed to improve the level of alerts, but the alarm sounds are annoying during application debugging, especially when the buzzer of The Dell notebook is a great surprise, So how to get rid of this annoying beep beep
1. What is the BIOS ?The BIOS is an abbreviation for the English basic input output system, and the Chinese name is the basic input and output systems after translation. Its full name should be Rom-bios, meaning read-only memory basic input/output system. In fact, it is a set of solidified into the computer board on a ROM chip program, it holds the most important
1. Goal/Purpose
I do mobile robot, ultrasonic or infrared ranging alarm is sure, a small experiment, the purpose is to ultrasonic ranging, OLED display the distance from the front obstacle, distance over the hour, buzzer alarm, and the smaller the alarm frequency of the more rapid beep.
2. Hardware
(1) stm32f1
(2) Ultrasonic Hc-sro4
(3) OLED12864
(4) BEEP
3. Hardware parameters
(1) Single chip microcomputer
We'll reinstall one after we remove the beep.
Beep-mile beep in Android and Apple all have pink and white two versions, if there is a flash-back, delete after downloading another try, the function is basically identical.
In addition, there may be situations:
Android User:
1, see if the memory is overused. Eliminate unnecessary processes and app
Sometimes, our computer does not start properly, and it emits a different beep, which means that the computer is faulty and needs to be ruled out. Beep is the computer BIOS preselection design good beep, we can according to the following content to determine exactly where the problem. The current common
A few days ago, repair computer main analysis on the brush BIOS, the results brush the black screen can not open the machine, immediately realized that the BIOS brush wrong. From the Internet to look up information, various methods tried all over, nothing useful. Finally kung fu not negative, found the encoder, know how to use. Here's a look at the specific usage: first bought a cheaper encoder: Remov
Asus laptop BIOS strategy: Restore the default bios settings, Asus laptop bios
We have already set it in the bios and want to restore it to the default setting. In the bios, how should we restore our settings? I would like to share my experience with you and hope to help
I have already learned some basic Bios knowledge and settings in the previous article. In this article, I will introduce Bios overclocking settings in more detail, it is expected to be helpful for players who want to overclock but do not miss the overclock.
Like the AMI Bios, press the "Del" key to go To the Bios sett
Computer now has become a daily necessities of life, then how much do you know about computers? The following small series for you to organize some common computer hardware knowledge, quickly to learn!
Computer hardware, including all the physical parts of a computer, to differentiate between the data it contains or executes and the software that provides instructions for the hardware to complete the task. Computer hardware mainly includes: chassis, motherboard, bus, power, hard disk, storage c
Keywords: Micro2440, Mini2440, Beep, Beep
The buzzer support has been added to the default kernel of Micro2440/Mini2440 linux (see
(Ls/dev/pwm indicates that your Micro2440/Mini2440 has a buzzer function .)
The following code references # Include # Include # Include # Include # Define PWM_IOCTL_SET_FREQ 1# Define PWM_IOCTL_STOP 0 // Note: // PWM_IOCTL_STOP is defined as 2, which is incorrect;// It should b
[Reprint] Turn off the virtual machine (VMware) motherboard alarm sound-error bell beep beepOriginal Address:Turn off the virtual machine (VMware) Board alarm sound-error Bell beepGust90After installing the virtual machine VMware, whether it is Windows XP, Windows 2003 or Linux system, there will be annoying beep, especially the Linux system, even if there is no sound will have this sound, this sound seems
In Windows ApplicationsProgramThe beep function is sometimes used to improve the alarm level. However, the alarm sound is disturbing during application debugging, particularly, the buzzer sound in the DELL notebook is even louder. How can we remove this annoying beep sound without changing the hardware?
Right-click my computer> Manage> Device Manager ".Open the "View" item in the menu and click "show hid
I have already learned some basic BIOS basics, and settings, so in this article I will give a more detailed introduction of the BIOS overclocking settings, I hope for those who want to overclocking but did not pick up the overclocking player can have some help.
As with the AMI bios, press the "Del" key to enter the BIOS
win8.1 system to open Thunder download beep tone method
The specific methods are as follows:
1, double-click the Thunderbolt software, click the Thunderbolt window left corner of the ellipsis icon, find the Settings menu;
2, click the ellipsis icon in the upper left corner;
3, in the ellipsis Drop-down menu, find the Setting center, click ' Set Center ', open the Settings Center menu, click "Advanced Settings";
There is no speaker on the company's computer, but another alarm is required. When I used Windows many years ago, I used a simple program that I wrote with BCB. Later I switched to Linux and used a simple beep script, which was then run in cron. However, after upgrading to Ubuntu12.04 recently, it was found that it was not ringing hellip; the script for voice production was very simple :#! /Bin/shforiin $ (seq4) do nbsp
There is no speaker on the co
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