One generally has to purchase the server hardware, which can vary depending on hardware - a cheap server may cost $200 while more powerful ones can cost tens (or hundreds) of thousands of dollars. One also needs to purchase a Unix license - the price of this averages $9400 and will vary depending on the number of users one expects.
Unix can be run on a variety of server, mainframe, and workstation devices.
Costs for a Unix license vary by vendor and number of users on the system. Most new system hardware comes bundled with at least a 2 user license. It can get very expensive depending on the vendor and the bundled products. I've seen Unix versions on mainframes that are upwards of 20,000 dollars a year, and some server based versions that are under $1000.
Unix can be used on a large number of mainframes, servers, and workstations. If you would like to use a certified UNIX system on commodity hardware, Solaris 10 can be downloaded free of charge for non-commercial use.
The AS/400 is a specific piece of hardware manufactured by IBM corporation. It runs its own operating system. Unix is the designation for an Operating System and runs on multiple hardware. To my knowledge the AS/400 does not run any version of Unix.
Unix was rewritten in the C programming language and not in assembly language. The migration from assembly language to the higher-level language C resulted in much more portable software, requiring only a relatively small amount of machine-dependent code to be replaced when porting Unix to other computing platforms. Unix manages the hardware and the executing processes by the kernel. The kernel is a collection of programs written in C which directly communicate with the hardware. applications communicate to system using kernal. Hence kernal need to be changed for different hardware but user interface remains same.
Unix was rewritten in the C programming language and not in assembly language. The migration from assembly language to the higher-level language C resulted in much more portable software, requiring only a relatively small amount of machine-dependent code to be replaced when porting Unix to other computing platforms. Unix manages the hardware and the executing processes by the kernel. The kernel is a collection of programs written in C which directly communicate with the hardware. applications communicate to system using kernal. Hence kernal need to be changed for different hardware but user interface remains same. (mihir)
The cost of the tank hardware pales in comparison to training the chipmunks to drive the tank.
Yes, although to use multi-programming effectively your hardware needs to have multiple CPUs.
Home Hardware sells a variety of playground slides, all ranging in cost. The slide may be 4' or 10' long and can also be covered. The cost range is between $300 to $800.
There have been over a hundred types of UNIX operating systems developed over the years to accommodate different types of hardware. FreeBSD, MacOS X Server, Red Hat Linux, and AIX are all UNIX-based systems.
We do not know how much the Xbox 720 will cost when it arrives. The cost of it will depend on how powerful the hardware it uses is. I expect it will most likely cost about the same as the Xbox 360 did when it first came out.