Posted on October 11th, 2008 by Groundware
by Kai Schmerer ZDNet Germany
Dual core processors work best when software can run in parallel on them. So-called ‘multithreaded applications’ benefit from an additional CPU core because subroutines can be allocated to different arithmetic and logic units. Administering the threads carries an overhead, though, which means that dual core processors are never exactly twice as [...]
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Posted on September 6th, 2008 by Groundware
original source : http://www.freewebs.com/simcloneinfo/
I have shown how parties with physical access to a victim’s GSM cellphone can “clone” the phone and fraudulently place calls billed to the victim’s account. This shows that the GSM fraud-prevention framework fails to live up to expectations, and casts doubt on its foundation (as well as the design process). However, [...]
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Posted on September 4th, 2008 by Groundware
Description
25-DSub
36-Cen
Strobe
1
1
Data Bit 0
2
2
Data Bit 1
3
3
Data Bit 2
4
4
Data Bit 3
5
5
Data Bit 4
6
6
Data Bit 5
7
7
Data Bit 6
8
8
Data Bit 7
9
9
Acknowledge
10
10
Busy
11
11
Paper Out
12
12
Select
13
13
Autofeed
14
14
Error
15
32
Reset
16
31
Select
17
36
Signal Ground
18
33
Signal Ground
19
19,20
Signal Ground
20
21,22
Signal Ground
21
23,24
Signal Ground
22
25,26
Signal Ground
23
27
Signal Ground
24
28,29
Signal Ground
25
30,16
Shield
Shield
Shield+17
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Posted on September 3rd, 2008 by Groundware
RX voltage must be limited to 3V (by stabilitron or by using 3 Volt MAX3232) when using cable for SMS-ing. Mobile phone will loose network signal during the data exchange without this.
Filed under: Electronics, Hardware, Projects, Schematics | 1 Comment »