SEOUL – Manufacturers of electronic devices from South Korea, Samsung, announced the latest hardware besutannya, solid-state storage drive (SSD) 840 Evo. The data storage hardware comes with capacities of 1TB of data.
Reported by Cnet, Thursday (07/18/2013), the launch of Samsung’s 840 SSD series has circulated in November 2012. Latest, Samsung offers a new device called the SSD 840 with a capacity of 1 TB Evo.
The main difference between the two is that, the latest variant of the Evo SSD 840 offers double the capacity than the 840 series and the performance is claimed to be faster. As with previous variants, 840 Evo comes with a 7mm thickness and 2.5-inch design.
The data storage device connectivity supports SATA 3 (6Gbps) I / O. Samsung said the 840 Evo compact design using 10-nanometer class technology with 128GB NAND flash memory.
Evo 840 companies scheduled to begin mass production in April 2013. The device will be equipped with Samsung’s multicore MEX controller.
This portable storage is claimed to offer speeds of between two to three times that of the previous series. Samsung SSD 840 Evo offers up to 520MBps and write speeds of 540MBps read. In random access (random access), the device offers up to 98,000 IOPS.
The company claims 840 Evo is the fastest SSD for consumers. Samsung 840 Evo will reportedly be available in five capacities, ie, 120GB, 250GB, 500GB, 750GB and 1TB. Not yet known how much the price tag of the new device.
Whether you’re a tinkerer with a custom rig, or you just aren’t sure why your computer’s fans are running, checking your CPU usage is a pretty common task. Instead of using a boring on-screen activity monitor though, you can hook up your machine to a car tachometer for constant feedback.
This hack comes courtesy of ivancreations, who created an entire PC monitoring block from real-world components. The full instructions are on his blog and needless to say, they’re pretty complicated. If you can makes heads and tails of his plans though, the results speak for themselves.
While the tachometer is my favourite part of the build, he also wired up some LED light grids to illustrate other vital system information as well. If you think you’re up to it, or just want a closer look, be sure to check out the source link.
In the previous issue we’ve become acquainted with a shell script and managed to create a very simple shell script. If we look, we did not perform any processing on the shell script. We only show a message on the screen and execute commands on the shell through shell script. What if we want to make the program more interactive shell script?
As with any programming language, shell script also serves to recognize the variables that can hold information temporarily for a variety of purposes, for example to compute or determine the output results. You may make as much as possible or use a variable in your shell script. Name the variables are independent, large and small letters should, but make it easier to remember, make it a habit to create standard rules in the manufacture of the variable name. At this writing, all variables will be written in lowercase.
Variables can be divided into two types, namely environment variables and user variables. Environment variables are variables that have been previously determined as a part of the shell used (bash). By default, the name of this variable using all capital letters. Example of this is the $ USER variable that will contain the user name you are currently using, $ HOME home directory which contains the address of the user that is used, and so forth. To display the entire value of an existing environment variable, you can use the set command in the terminal (Figure 1). User variable is the variable name specified by the user themselves and not by the shell used.
Variables can be accessed by using the dollar sign ($) before the variable name, for example, we have a variable named “my name”, to access the value stored in the variable, we use the $ my name. To give value to a variable, we use the sign “=” is immediately followed by the value we give without any spaces, for example my name = Willy. What if the value that we want to give is a sentence? Use double quotes as the opening and closing value of a variable, such as my name = “Willy Sudiarto Raharjo”. For example, see listing 1 and try running on your computer. Seen that the value of the variable Sudiarto be regarded as a command and not part of the variable because it is not enclosed in double quotation marks. Please be careful in giving a value to a variable.
You can combine environment variables and user variables in a shell script is the same, as in listing 2. What if want to write a message using the $ character, such as “It cost me $ 15”? If we are not careful, it could be a shell script would be wrong to interpret the information that we provide and try to take the value of variable 1 (which will not contain any) and display it as a “price 5”. To fix this, use the escape character to indicate that the next character will be recognized as a regular character and not as a substitute for a variable, which marks the backslash “\” as in listing 3.
One character that needs more attention is the backtick character “` “(position number 1 on the left side your keyboard) because this character has a special function in shell