DIMM:
Stands for
"Dual In-Line Memory Module." It is a type of computer memory. A DIMM
is a small circuit board that holds memory chips. It uses a 64-bit bus to the
memory, whereas a single in-line memory module (SIMM) only has a 32-bit path.
This allows DIMMs to transfer more data at once. Because DIMMs have faster data
transfer capabilities than SIMMs, they have pretty much replaced SIMMs.
Ethernet:
Just to be
clear, the first syllable is pronounced "eath" as in "Heath
Bar," not like "eth" as in Bethany. Some people find this out
the hard way (ridiculing laughter), but at least you don't have to. Ethernet is
the most common type of connection computers use in a local area network (LAN).
An Ethernet port looks much like a regular phone jack, but it is slightly
wider. This port can be used to connect your computer to another computer, a
local network, or an external DSL or cable modem.
Two
widely-used forms of Ethernet are 10BaseT and 100BaseT. In a 10BaseT Ethernet
connection, data transfer speeds can reach 10 mbps (megabits per second)
through a copper cable. In a 100BaseT Ethernet connection, transfer speeds can
get up to 100 mbps. There is also a new technology called "Gigabit"
Ethernet, where data transfer rates peak at 1000 mbps.
Http:
Stands for
"HyperText Transfer Protocol." This is the protocol used to transfer
data over the World Wide Web. That's why all Web site addresses begin with
"http://". Whenever you type a URL into your browser and hit Enter,
your computer sends an HTTP request to the appropriate Web server. The Web
server, which is designed to handle HTTP requests, then sends to you the
requested HTML page.
Kerning:
Kerning
refers to the spacing between the characters of a font. Without kerning, each
character takes up a block of space and the next character is printed after it.
When kerning is applied to a font, the characters can vertically overlap. This
does not mean that the characters actually touch, but instead it allows part of
two characters to take up the same vertical space.
For example,
when the characters A and V are placed next to each other, they can take up
less total space if they overlap. This is because the right part of the A and
the left part of the V fit together. If kerning is applied to the two
characters, you could draw a vertical line straight down starting from the top
left part of the V and it would go through the lower right part of the A.
Kerning is
useful because it allows more text to be placed within a given amount of space.
This allows longer articles to be placed in newspapers and magazines with
limited space. It also looks more natural because when writing by hand, people
often make characters overlap. Many text editing programs, as well as image
editors such as Adobe Photoshop, allow the user to kern characters. These
programs often include a kerning setting that enables the user to determine how
tightly the characters fit together.
Gigabyte:
A gigabyte
is 109 or 1,000,000,000 bytes.
One gigabyte
(abbreviated "GB") is equal to 1,000 megabytes and precedes the
terabyte unit of measurement. While a gigabyte is technically 1,000,000,000
bytes, in some cases, gigabytes are used synonymously with gibibytes, which
contain 1,073,741,824 bytes (1024 x 1,024 x 1,024 bytes).
Gigabytes,
sometimes abbreviated "gigs," are often used to measure storage
capacity. For example, a standard DVD can hold 4.7 gigabytes of data. An SSD
might hold 256 GB, and a hard drive may have a storage capacity of 750 GB.
Storage devices that hold 1,000 GB of data or more are typically measured in
terabytes.
RAM is also
usually measured in gigabytes. For example, a desktop computer may come with 16
GB of system RAM and 2 GB of video RAM. A tablet may only require 1 GB of
system RAM since portable apps typically do not require as much memory as
desktop applications.
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