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英语 8:32 Science & Tech

Reverse Engineering: The flip-flop, cornerstone of digital design

A24 · 7,704 次观看 · 添加于 1 个月前

字幕 (226 片段)

00:00

Behold the flip-flop. You've probably

00:02

personally purchased about a billion of

00:04

these. Uh if you're watching this video

00:05

on a modern uh cell phone, around 200

00:08

million, another 200 million probably in

00:10

your personal computer. Uh 50 million at

00:13

least on a modern car uh spiraling up

00:15

into the hundreds of millions if you

00:16

have a fancy electric one. Another 50

00:19

million for your TV set. Um multiply

00:21

that by all the previous versions you

00:22

bought. Multiply it by all the ones you

00:24

bought for a family. And uh yeah, uh

00:26

it's not inconceivable the average

00:28

viewer. this uh video has purchased at

00:30

least a billion flip-flops. To sort down

00:32

what this thing called the flip-flop is,

00:34

uh let's uh take a look at this

00:35

particular part. Reverse engineer. This

00:37

is the 4013. Uh this is actually a

00:40

fairly old part from 1980s. Uh it is a

00:42

good example, however, of a CMOS

00:45

flip-flop. All new, all silicon these

00:47

days is CMOS. And quite frankly, design

00:50

lessons that are shown in this

00:52

particular device uh will be carried

00:55

forward from the the 1980s all the way

00:57

up to the modern gadgets you have in

00:58

your hand. Uh it is two flip-flops this

01:01

package. Uh so uh it's going to be very

01:03

easy to actually take this under a

01:05

microscope and uh take a look at the

01:07

individual transistors uh which make up

01:09

a flip-flop. So this video is in two

01:12

parts. This is this just schematic

01:14

symbol for a flip-flop. I have an

01:16

introduction if you'd like to be

01:17

refreshed as to what a D flip-flop is.

01:20

Um it's so-called named D flip-flop

01:21

because that's the uh data input there.

01:24

And the second half of the video, we'll

01:25

do a silicon level analysis. So if you

01:27

know what a D flip-flop is, you can skip

01:29

the first half of the video and uh look

01:31

at all the juicy details of a diaphoto

01:33

and the transistors that it contains. Uh

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