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Hard Disk Selector

Hard Disk Selector
Hard Disk Selector
In the last few years, the available range of operating systems for PCs has increased dramatically. Various free (!) operating systems have been added to the list, such as BeOS, OpenBSD and Linux. These systems are also available in different colours and flavours (versions and distributions). Windows is also no longer simply Windows, because there are now several different versions (Windows 95, 98, ME, NT and XP). Computer users thus have a large variety of options with regard to the operating system to be used. One problem is that not all hardware works equally well under the various operating systems, and with regard to software, compatibility is far from being universal. In other words, it’s difficult to make a good choice.

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Materials

Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.

TIP: your first PCB at AISLER is free up to €30 with using the coupon code ELCCBB at checkout.

The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.

PCB

Component list

Resistors:
R1 = 10k?
R2,R6 = 15k?
R3,R7 = 1k?
R4,R8 = 2k?7
R5,R9= 10k?
Capacitors:
C1 = 100 n
Semiconductors:
D1 = LED, low-current, yellow
D2 = LED, low-current, green
IC1 = 4013
T1,T3 = BC557B
T2,T4 = BC547B
Miscellaneous:
K1,K2,K3 = 40-way boxheader
K4 = 4-way SIL pinheader
S1 = switch, 1 make contact
PCB, order code 034050-1

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