Wang Xueba System

"The hard disk is also broken?" Bai Ling asked in surprise, "So powerful?"

"It's luck." Luo Hao said with a smile, "This method may not be successful."

"What method did you use?" Tantaiyue asked again.

"You all study software engineering, so you don't know how much you know about hardware." Luo Hao didn't answer Tan Taiyue directly, but asked instead.

"Our understanding of computers should be no worse than that of ordinary computer majors." Sun Yi said confidently.

"Then do you know how the voltage of the host is lowered?" Luo Hao looked at Sun Yi, "Have you noticed?"

"This..." Sun Yi was speechless, "Who will pay attention to this?"

"The method I used today is related to this." Luo Hao said, "The current host computer rarely uses a power amplifier power regulator, and basically uses a switching power supply."

"Switching the power supply?" Bai Ling was a little confused, "What does your virus have to do with me being unable to turn on the power supply?"

Luo Hao: =????(???????)

"This..." Luo Hao touched his nose, "Switching power supply is a switching regulated power supply, it doesn't mean you turn the power on or off..."

"Oh, that."

Bai Ling was a little embarrassed, while Sun Yi and Zhou Cheng burst out laughing.

"Don't laugh!" Bai Ling raised his fist.

"The principle of switching power supply is mainly to use modern power electronic technology to control the time ratio of switching tube on and off to maintain a stable output voltage. Switching power supply is generally composed of pulse width modulation control IC and MOSFET." Luo Hao explained Dao, "The switching power supply control voltage can be changed through software. I won't say much about the specific principles."

"The CPU is very sensitive to voltage. It can finely adjust the voltage by sending signals to the switching power supply. What my virus needs to do is to enter the underlying program, prevent the CPU from sending signals, and adjust the voltage of the switching power supply to The biggest, so it won't be long before the CPU will be scrapped."

"The same is true for the hard disk, just increase the voltage or current. The virus I made will format all the data before the hard disk is scrapped, and will continue to generate new files, and then delete them. After a period of time, even if the hard disk is not If something goes wrong, it is impossible to restore the file through technical means.”

Luo Hao finished speaking in one breath, and took a deep breath: "Next, we need to confirm whether the hard disk can be repaired and restore the data."

Luo Hao looked at Tan Taiyue: "Team leader, do you have any acquaintances in this regard?"

"Yes, don't worry." Tantaiyue nodded.

"Next, we have to try another aspect." Luo Hao took out the USB flash drive and plugged it into another computer, "It is also very important to see if the data can be recovered if the hard drive is not damaged. .”

Next, Luo Hao's operation is the same as before. After testing the program, he starts to decompile it.

Soon, the screen went black again and began to display the text that had been displayed before. Luo Hao didn't start to check the computer until the monitor finally indicated "No Signal".

After pressing the power button, the computer still displays the prompt of "DISKBOOTFAILURE, INSERTSYSTEMDISKANDPRESSENTER."

"Well, it's basically confirmed that the files in the hard disk have been deleted, even the operating system is gone." Luo Hao nodded, shut down the computer, removed the hard disk, handed it to Tantaiyue, and said, "These two hard disks Let’s check together and see if we can recover the data just now, after all, the decompilation software may decompile some files.”

"Okay, leave this to me. It's getting late today. I'll have someone test it tomorrow morning and give you an answer as soon as possible." Tantaiyue nodded, looked at the time, and said.

"The rest should be repeated testing, but judging from today's test results, there shouldn't be any major problems." Luo Hao looked at everyone, "As for the code encryption problem, if you want to ensure security , it’s time to look at the usage situation, the big deal is to change it to local code, restrict the usage environment and it’s over.”

"That's fine." Tantaiyue nodded, "An extra layer of protection means more security."

"Can't you upgrade this program?" Bai Ling asked suddenly.

"How else to upgrade?" Luo Hao was taken aback.

"A fifth-grade math problem?" Bai Ling said excitedly, "If your program can solve the fifth-grade math problem, then we Xia Guo will be great!"

"Although you look pretty, you can't think too beautifully." Luo Hao's mouth twitched slightly, "I haven't become a fifth-level mathematician yet, and I may not even be able to solve fifth-level math problems. How to make the program do it?"

"Hey, I just think about it." Bai Ling was a little embarrassed.

"Let's go here today, and look at the test results of these two hard drives tomorrow. If the expected goals can be achieved, then the preliminary research results can be written and submitted as a report." Tan Taiyue looked at everyone and said, "As for subsequent extensive testing, it is also possible to apply for actual testing."

"Okay." Everyone agreed, cleaned up the conference room, and walked outside together.

"Xiao Xi." Luo Hao looked at Huang Xi, "I asked you to come here to do the questions, but you couldn't get down to study the questions."

"It's okay, I have nothing to worry about." Huang Xi didn't care, "Your program is very interesting. It's so powerful."

"That's, you didn't know how powerful I am as a man, you didn't know today." Luo Hao was proud.

"Hey~" Bai Ling, Sun Yi, and Zhou Cheng turned their heads and looked at Luo Hao and Huang Xi playfully.

"Hmph!" Huang Xi blushed, and quietly stretched out her hand to touch the soft flesh on Luo Hao's waist, and pinched it.

"Oh~" Luo Hao cried out in pain, causing everyone to burst into laughter.

............

At noon the next day, Luo Hao was having dinner with Huang Xi when his phone rang suddenly.

"Hey, Luo Hao, the two hard drives have been tested, but the data cannot be recovered! We... no, it's you, you succeeded!"

As soon as Luo Hao connected the phone, Tantaiyue's voice came from inside.

"Hey, that's really great. I didn't know what to do before." Luo Hao also laughed when he heard this, "It's all thanks to everyone, and you have helped me a lot."

"Don't be modest, what did we do for you? You made the program by yourself." Tantaiyue said.