HCB Chapter 576 A big shot appears, one of them is worth three!
Chapter 576 A big shot appears, one of them is worth three!
Grandma's skills are as good as two people's!
However, the current dark green chip version has lost the neat feeling it had at the beginning.
Because of the reduced usage requirements, Jiang Xia asked the instructor to peel off the covers on some of the chips.
Even the pins of some independent components were used.
Even so, Jiang Xia was still not satisfied, pointing to the copper foil on the board used as connecting wires:
"Uncle, could you scrape this copper foil a little bit, make it thinner, but don't break it? We need to connect two flying wires here..."
The instructor held a small red-cased knife in his hand and looked at the spot Jiang Xia was pointing to.
Brother!
The thread here is only as thick as a hair, listen to what you're saying! It needs to be scraped even thinner, and it can't break?
Pooh!
The instructor hesitated as he pressed the blade into the body of the knife, and then, after thinking for a moment, he actually pulled out a slightly smaller blade from the knife.
No, it's still too big.
The instructor kept changing the blade, and finally, he managed to break off a small pair of scissors from the knife.
Jiang Xia stood to the side without urging her, placing his hands on the old lady's shoulders and gently massaging them.
But those eyes unconsciously drifted to the peculiar little knife. Hiss... isn't that a Swiss Army knife?
Where did they get the instructor?
The instructor held the scissors in front of the board, but ultimately didn't dare to make the cut.
After all, this brat in front of me said there are only two sets of this kind of board, no more! Moreover, this is the last step in modifying the board; if it connects, it's a success, if it doesn't, then it's all for nothing!
A board that costs at least $10,000!
The instructor dejectedly put down the knife in his hand and looked at Lao Wang and the others with pleading eyes.
Unexpectedly, the two men squatted down on the ground and pretended to examine the white piece of meat in front of them.
Pshaw! You guys act like microbiology researchers!
The instructor started grinding his teeth.
Grandma patted Jiang Xia's hand and took out a long needle: "It's so troublesome! The thread is perfectly fine right there, why do you insist on fiddling with it!"
"Grandma, there's no way around it. These two components are too close together, which could easily cause a PN junction. And here, if we don't make them smaller, I'm afraid another metal melt will happen, and then we'll be doomed!"
Jiang Xia was also a bit anxious at this moment. It wasn't that he wanted to cause trouble for others, but rather that in the early CMOS process environment, their transistor structure would naturally form parasitic bipolar transistors, forming a four-layer (npnp) equivalent silicon controlled rectifier (SCR) path. As soon as this thing was formed, the situation of high current short circuit would follow.
If the computer crashes and restarts after a power outage, that's fine. What's truly worrisome is when the instantaneous current reaches the ampere level, causing oxide layer breakdown, which would be disastrous.
Unfortunately, the nickel-cadmium batteries that Jiang Xia chose were prone to a sudden voltage drop when discharging. Although according to Ohm's law, with constant resistance, a drop in voltage should result in a drop in current.
But this is a transistor. When the voltage drops to a certain level, the diode may enter the reverse breakdown region, causing a sudden increase in current.
It would be strange if it didn't burn!
A barrage of technical jargon left the men standing nearby bewildered, while Grandma listened attentively to Jiang Xia's explanation and nodded in agreement.
"Since it's true, let's face the challenge head-on!"
As he spoke, the old man lifted the circuit board closer to the light above his head, squinted his eyes, and prepared to begin carving it carefully.
The men held their breath, afraid of interfering with Grandma Jiang's movements.
After pausing for a few breaths, Grandma put the board down dejectedly: "Sigh! I'm getting old! My hands are starting to shake!"
"Grandma! What do you mean 'old'! You're someone who eats Ju-rou and can live to be a hundred!"
"Let me do it!"
Jiang Xia quickly asked her grandmother to place the board on the wooden board, and at the same time, she took off the static cling bracelet and put it on herself.
Surely, with the scanner's capabilities, I should be able to accomplish this impossible task!
Tsk, why didn't I stick with it when my grandma taught me calligraphy? I should have developed better wrist strength that way.
Just as Jiang Xia was about to force himself on him, the instructor sighed.
He tossed the small red knife in his hand and said, "Jiang, I'll find someone. He can definitely handle it!"
"Eh?"
"Brother! You can't just call people that! Don't forget, you stayed up all night memorizing the regulations! Besides, you should know how important those boards in front of you are!"
When Lao Wang heard that the instructor wanted to call for help, he stopped studying Tai Sui, stood up, looked at the instructor, and said the words above word by word.
The instructor waved his hand, "I know, I can vouch for that person's qualifications! It's just that I'm afraid I can't protect this little thing!"
The instructor touched the knife with lingering affection, then walked out of the tent with a resolute expression.
……
Huh? Who's this? Jiang Xia looked at the short-haired guy who walked into the tent. Why isn't this guy wearing a military uniform?
The person who arrived was dressed in a dark blue gabardine uniform, which even had a small lapel and four visible pockets below the collar.
Isn't that the uniform of the railway bureau chief? How did it end up in the queue?
Also, Secretary Liu, not only do you follow others around, but if you had a tail, you'd probably look no different from the big yellow dog squatting at the door!
The man patted Jiang Xia on the shoulder with a smile: "Hey, little Jiang! Hahaha, I ran into you on a mission! Our minister has been saying he wants to treat you, such a busy person, to a meal, but we can never get a chance to meet up!"
I never expected to run into them first! This is quite a pleasant surprise!
"Let me tell you, your thermite is absolutely amazing! It made our railway tracks so smooth to lay!"
After saying that, he slapped the instructor in the chest: "You old Zeng! You tried to ambush me! If Xiao Jiang needs something, just say so! You made me waste so much of his time!"
As he spoke, the man gave Grandma Jiang a slight bow.
"Grandma, let me take a look at this little board..."
"Wow, it's quite exquisite! Little Jiang, did we make this ourselves?"
"Yes! Uncle, would it be easier for you to scrape this copper wire in this board a little thinner?"
Looking at the puzzled Old Wang and the secretary, Little Liu, who was following behind this overly familiar uncle, Jiang Xia pointed to the parts on the board that needed improvement.
"Ha! No problem. Leave it to me. How fine do you want it shaved?"
"Make it one-third smaller than it is now!"
"Okay!"
The uncle placed the circuit board on the wooden board, and following Jiang Xia's instructions, touched the bronze cauldron before putting the electrostatic bracelet made of copper wire on his wrist.
"Hehe, how meticulous. Touching the bronze cauldron, does that mean you've paid homage to your ancestors? Don't worry, Little Jiang, I'll make sure it's done perfectly for you!"
Watching the uncle pick up the needle left by his grandmother, squint his eyes, and start scraping straight up, Jiang Xia's heart jumped into her throat.
Ignoring the question about the man's identity, she quickly opened the scanner and nervously began to look at the contents.
Old Wang, standing behind them, nudged the instructor.
"Tell me, how did you manage to persuade this person to come out of retirement?"
"Hey! No need to change shifts. The railway chief has agreed to the higher-ups' request and is preparing to build a railway line over there. This gentleman happens to be the person in charge of this field inspection; he's going to come with us to take a look..."
"Tsk tsk, I didn't expect Engineer Jiang to be so familiar with the Ministry of Railways... If I had known, my knife..."
"So, what makes you think he can meet Xiao Jiang's requirements?" Old Wang leaned closer to the two of them and asked with a hint of doubt.
"He was awarded a special merit simply because he didn't fire a single shot. He dismantled over twenty tons of explosives..."
"Someone who can dismantle a butterfly mine can't handle a single wire?"