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Split welding of BGA IC

Mobile phone bga ic welding and troubleshooting skillsZhu haiqingSelection of a tin planting Tool 1. Tin planting BoardCommercially available tin planting boards are generally divided into two categories: one is to make all models on a large connected tin planting Board; the other is a board of each IC, the two plantingThe tin board is used in different ways. The method of using the connected tin pad is to print the tin paste on the IC, then pull th

12 balls are too small. I can name 14 balls three times. Don't believe it? I also called 41 balls for four times, and 122 balls for five times ......

This article was originally published in my technical blog at javaeye. One of the 12 table tennis balls (or gold coins) is a defective item. The weight is different from that of other balls (but I don't know whether it is light or heavy, it can be called several times to see which ball is a bad ball. This question was published on the BBS of the University a long time ago. I cannot find it, and it is not

SOP, DIP, PLCC, TQFP, PQFP, TSOP, BGA package explanation

feature of the TSOP memory encapsulation technology is that the pin is made around the encapsulated chip, and the TSOP is suitable for mounting cabling on the PCB (printed circuit board) with SMT Technology (surface Mount Technology). TSOP package dimensions, parasitic parameters (the current greatly changes, causing output voltage disturbance) reduced, suitable for high-frequency applications, the operation is more convenient, high reliability.7. BGA

Altium designer BGA Fan out "reprint"

Altium designer BGA fan out 2012-02-28 14:52:06 share:First, Altium Designer has known for so long, did not use his automatic fan-out function, today, a try, the effect is good, but now has not found not fan out no network pin method, I now talk about my automatic fan out step to everyone to say, in the BGA above the right click, Select Component Atcions then select Fanout Component, this is a dialog box wi

Mercedes-benz NEC BGA 315MHZ 433MHZ 434MHZ GLK GLA GLC ML W204 W207 W212 W221 W222 S300 S350 S400 S500 S550 S600 C180 C200 C260 C300 ES350 GLK300 GLA200 e260l C200 B200 s320l Mercedes-benz KEY PC

AUTO ECU CHIPS STOCKESL Motor ELV Motor Steering Lock Wheel-Mercedes-benz ESL/ELV Motor Steering Lock Wheel motor for Mercedes-ben Z W204 W207 W212 ESL Motor ELV MotorMercedes-benz NEC BGA 315MHZ 433MHZ 434MHZ GLK GLA GLC ML W204 W207 W212 W221 W222 S300 S350 S400 S500 S550 S600 C180 C200 C260 C300 ES350 GLK300 GLA200 e260l C200 B200 s320l Mercedes-benz KEY PCBL9762-BC apic-s03 l9302-ad L9132 l9131 L9930 SE814 sak-c167cs mc33291st10f273 st10f275 14CL4

Problem of finding abnormal balls for N balls

1. There are 8 balls of the same size and color. One of them is different in weight from the other 7. At least a few times, it determines whether the ball is light or heavy. Warm-up questions There are eight balls, one of which is slightly different, and it knows that it is slightly lighter than the other seven, and the other seven have the same weight. Now there is only one balance, but there is no weight,

Algorithm title------"A bucket of 100 white balls, 100 black balls, the last one is the probability of a black ball? 】

today to see an interesting topic, heard is "The beauty of programming" in a problem, instantly feel that they are a lot behind. Take out today and share my insights on this topic! The original problem: a bucket with 100 black balls, 100 white balls. Take the ball in the bucket in the following order:1. Take out 2 balls at a time;2. If the same color ball is put

A balance, 12 balls of the same size and appearance. The weight of a ball is different from that of other balls, and the ball is identified three times.

An interesting smart question: given 12 balls of the same size, only one ball has a different weight from other balls. How can we use tianyao to name it three times to find the unique ball, in addition, it is determined that the emphasis is light or not. Number the ball, 1 ~ 12. extract 1 ~ The 4th ball is a group of A, and 5 ~ The ball on the 8 th is a group of B, and the remaining 9 ~ The ball on the 12

Place 2N balls in M boxes (N & gt; = M) so that the number of balls in each box is even.

Put 2N balls in M boxes (NM) so that the number of balls in each box is even By: LuoWeifeng2011-3-16 yesterday a MM (old table) asked me a simple algorithm design questions. The question is simple, but the simpler the question, the more challenging it is. Toiterateishuman, torecursedivineL. PeterDeu Put 2N balls in M boxes (N = M) so that the number of

If there are n balls with different numbers in the bag, is it possible to retrieve any two of the three balls without a serial number? (Downmoon)

Someone asked: Is there one ball in the bag that ranges from 1 to 10? If you want to retrieve three balls, do you have the chance that any two balls in the bag will not be connected? The invitation month took a try today. The algorithm is very general. We are looking forward to communication. The approximate algorithm is a three-tier loop. One Ball is taken out first, and then any one is taken from the rema

[Probability] m balls are thrown into n boxes, and n balls are placed in m boxes.

[Probability] m balls are thrown into n boxes, and n balls are placed in m boxes.Problem description There are m balls, which should be thrown into n boxes. Each ball is independent of each other. Q: How many boxes have balls on average?Problem Analysis This type of question is purely a mathematical question. Of course

Java Learning diary-----------------------------Bouncing Balls

Fun little program, Pinball ......... ........Importjava.awt.*;Importjavax.swing.*;Importjava.awt.event.*;Importjavax.swing.event.*; Public classBallscanvasextendsCanvasImplementsactionlistener,focuslistener{PrivateBall balls[]; PrivateTimer timer;//Timer Private Static classball{intx, y; Color color; BooleanUp,left; Ball (intXintY,color Color) { This. x=x; This. y=y; This. color=color; } } PublicBallscanvas (Color c

POJ 3687-labeling Balls (reverse order topology)

Labeling Balls Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 11256 Accepted: 3230 DescriptionWindy have n balls of distinct weights from 1 unit to N units. Now the he tries to the label them with 1 to N in such a by that: No. Balls share the same label. The labeling satisfie

Grids in Unity merge with material balls

51517860Many times we need to combine material balls with the same shader to reduce the drawcall. For example, in the Kowloon War, a character with 10 parts, 10 parts of each from different FBX files, plus the body, there are 11 of material balls, accounting for 11 drawcall. If there are 10 characters running in the main city, the light figure takes up 110 drawcall! So the material ball merging is necessary

Dou Fish TV fish balls How to use?

Dou Fish TV fish balls to make money mainly through other people send gifts, and then gift you can exchange into 100 fish pill, and then 100 fish balls = 1 cents, so we will be in this way to exchange on it, the specific I still for you to introduce a detailed. First, fish bucket gifts There are a lot of gifts to be given to the host in the fight Fish TV, some of which cost shark's fin with fish

Codeforces 553A. Kyoya and colored Balls combinatorial mathematics

Kyoya Ootori have a bag with n colored balls that is colored with k different colors. The colors is labeled from 1 to K. Balls of the same color is indistinguishable. He draws balls from the bag one by one until the bag is empty.He noticed that he drew the last ball of color i before drawing the last ball of color I + 1 For all i from 1 to K -1. Now he won

JAVA multithreading making big ball eat small ball one, realize the automatic generation of balls and the consumption model of sports production

Public voidCrash (Graphics g) {}}After creating the small ball, we need to thread to create the ball, change the ball, there is also a problem, we are using one thread or two or more? This way, if only one thread, then we have to change the ball in the creation of a small ball, if the number of smaller balls is not a problem, but when the number of balls, every convenience will be used for a period of time

Python data analysis: two-color ball statistics of which combination of red and blue balls is high, python Data Analysis

Python data analysis: two-color ball statistics of which combination of red and blue balls is high, python Data Analysis This article describes how to calculate the ratio of two red and blue balls in a two-color ball statistical method based on Python data analysis. We will share this with you for your reference. The details are as follows: Count the combination of two red and blue

Lightoj 1317 throwing Balls into the baskets

Lightoj 1317 throwing Balls into the baskets (expected) Problem solving reportTitle Link: Http://acm.hust.edu.cn/vjudge/contest/view.action?cid=88890#problem/ATopic:DescriptionYou probably has played the game "throwing Balls into the basket". It's a simple game. You had to throw a ball into a basket from a certain distance. One day we (the Aiub Acmmer) were playing the game. But it is slightly different fro

10 small balls with a balance to find the one with different weights.

Last week was an algorithm topic, the topic is: There are 10 small balls, the appearance of the same, of which 1 balls and other 9 ball weight is different, please use the balance to find the minimum number of times the weight of the ball.Problem-solving ideas: In fact, this is a very typical use of the partition algorithm example, because do not know this particular ball is heavier than other

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