Comments on: Top 10 Rules of Punctuation

By: Marcelo

Marcelo — Tue, 24 Apr 2012 03:59:22 +0000

Well done for finding our Blog! Thank you for your coemnmt. I’m so glad Khadija is enjoying it in Year One I’m enjoying having her! Keep checking our Blog! From Mrs Chadbond

By: Vicente

Vicente — Sat, 21 Apr 2012 11:35:07 +0000

Not easy being greenPrinted circuit oabrds, or PCBs are found in practically everything that you interact with daily that uses electricity. Everything from computers and cell phones to cars and trucks, your household appliances and remote controls, they all have PCBs in them somewhere. The vast majority of them are green though some are red, blue, yellow, black, white, or brown but why, for the most part, green?A bit of anatomyA PCB is made of many layers of different materials. Without going into excruciating detail, circuit oabrds are essentially comprised of four different bits:Conducting layers made of thin copper foilInsulating layers Teflon is a common oneEpoxy resin (impregnated with fiberglass or similar) to bind the conducting and insulating layers togetherSolder mask the bit that coats the board and covers the tracesIt’s the solder mask that gives the board its disctinctive (typically) green color. It is also the layer that the silkscreened notations are printed on, so you know where everything is supposed to go.It’s not envyAfter searching high and low for this one, there didn’t seem to be one conclusive answer as to why green is the preferred color. One story has it, according to this , that the original masks used a base resin that was a brownish yellow color and a brown hardener that created a sort of ugly honey brown looking board. Adding red made it a rusty adobe color and adding blue just made it a darker brown however adding more yellow to the mix ended up making a more aesthetically pleasing green color.Personally, having seen oabrds of every color including the not so pleasant brown mentioned above I think there’s probably something to that story. Most likely today it’s a matter of tradition and cost PCBs have been perceived as green for so long, it’s hard to move away from that, and as a result of it being the most popular color the green solder mask is most likely the least expensive color to apply.

By: showkat

showkat — Sat, 31 Mar 2012 15:34:22 +0000

i think grammer plays an important role in a language

By: Null

Null — Sun, 25 Mar 2012 13:19:31 +0000

Commas give me the most trouble.

By: venillict

venillict — Thu, 08 Mar 2012 15:44:42 +0000

Name

By: Sherina Victoria

Sherina Victoria — Wed, 22 Feb 2012 01:07:41 +0000

People don’t give good grammar & punctuations enough credit.

By: Robb

Robb — Wed, 25 Jan 2012 12:28:21 +0000

In a world where even teachers are beginning to accept ‘text-speak’ in written assignments, a list like this is a breath of fresh air!

By: michael

michael — Wed, 25 Jan 2012 00:24:55 +0000

Heroajax, you have just discovered some differences between British and American English. All three quotes are incorrect/different when using British-English.

By: Lombardo

Lombardo — Fri, 13 Jan 2012 21:04:17 +0000

Thanks

By: Name

Name — Tue, 13 Dec 2011 22:22:19 +0000

whaqt about a * what is this used for