Communication Handshaking

A few days ago I added a page to cover the Definition of Handshaking. The page is an addition to the current definition of a Hand-Shake that was already listed. It appears to be a pretty good start at addressing the protocol on how two devices pass data.

These days handshaking doesn't occur that often, most buses operate a lot faster using a clock. But for what ever reason I enhanced the definition. I'll finish up over the week, with more text and a few more examples.

Google indicates only one page view in the last few days, which would be from me? I also don't see the page come up in a Google search, but I'll check again a few hours after I post this.

CMOS Monostable Multivibrator

I added a new page to show the functional schematic of a CMOS 4098 IC, a Monostable Multivibrator. The page is linked off the page covering IC Functional Schematics. That section currently has 25 pages of functional IC schematics.

A related page covers Transistor Multivibrator Circuits. All the pages are linked off the Engineering Dictionary, for what ever reason.

I also updated the MIL-STD-1553 page too, in addition to many other pages.

Graphic; C5 Galaxy Transport Aircraft, in flight. USAF photo.

Universal Flash Storage card

The Universal Flash Storage card [UFS] is due to be released in the 4th quarter of 2010. The Universal Flash Storage card would be the 'next generation' in Flash Card. I haven't found to much data on the interface yet, if any. Much of the search results return articles from 2007 when the interface standard was first announced. Other than that I found that the transfer rate would be 3Gbps per lane, which tells me it's a PCIe type of interface with multiple serial lanes. So the new page is blank, that's normal. I'll keep looking for some data, the draft specification should be out on the web......

I would guess that if the standard doesn't come out until the end of this year, I wouldn't expect any Flash cards to appear before mid 2011. However there's always a chance that a company is all ready working on a product, under the assumption that only minor changes will occur to the specification at this point.

Now this is not a computer standard. The specification is really geared to storage applications on a camera or cell phone. But you would still find the interface on a PC as a slot in a Card Reader, or generic flash card reader.

Any way I get to generate a new page, 11 so far this year. I just hope I can find some information on the interface before Google reads that new page and finds it blank.......

Here is a portion of one of those articles from 2007 indicating that Universal Flash Storage could replace the many different flash formats on the market now [which they list]; ".. CompactFlash I, CompactFlash II, Memory Stick, Memory Stick Duo, Memory Stick Micro M2, Multimedia Card, Reduced Size Multimedia Card, MMCmicro Card, Secure Digital Card, miniSD Card, microSD Card, PC Card, xD-Picture Card, Intelligent Stick, Serial Flash Module, µ card, NT Card, and SmartMedia card .." There does seem to be a few competing formats.

Press-on Connector Covers

I had a few yet to be used connector cover graphics so I added a new page to hold them.
The new page is called Press-on Connector Covers. The original page covered all styles of Protective Dust Covers. Both pages are part of the section on How to design Equipment Chassis.
This will be one of those page that will never see many page views. Although the page does not have a lot of text, the text it does have is a copy of the original page.

Graphic; Rear Panel Circular Mil connectors.

Wire size and Resistance

I started a new page yesterday in regards to Wire Gauge vs Resistance.
As I get started on it the page my offer a faster alternative to deciphering the larger Copper Wire Gauge table.

Other then that I don't have much to say. I'll keep working on it......