dual-core processing
Yes. The JVM is an executable program, that is, it contains instructions in machine language - for a specific processor. Since different processors have different sets of instructions, the instructions for one processor won't work on another one.
A core duo processor has two processor cores. A quad core contains four. Multiple processor cores is somewhat like having multiple individual processors, thus allowing your computer to handle more operations at once. For a much more detailed description of multi-core processors, you can read the wikipedia article here: http://en.wikipedia.org/wiki/Multi-core_(computing)
A dual-core CPU (or chip-level multiprocessor, CMP) combines two or more independent cores into a single package composed of a single integrated circuit (IC), called a die, or more dies packaged together. A dual-core processor contains two cores and a quad-core processor contains four cores. A multi-core microprocessor implements multiprocessing in a single physical package. A processor with all cores on a single die is called a monolithic processor. Cores in a multicore device may share a single coherent cache at the highest on-device cache level (e.g. L2 for the Intel Core 2) or may have separate caches (e.g. current AMD dual-core processors). The processors also share the same interconnect to the rest of the system. Each "core" independently implements optimizations such as superscalar execution, pipelining, and multithreading. A system with N cores is effective when it is presented with N or more threads concurrently. The most commercially significant (or at least the most 'obvious') multi-core processors are those used in computers (primarily from Intel & AMD) and game consoles (e.g., the Cell processor in the PS3). In this context, "multi" typically means a relatively small number of cores. However, the technology is widely used in other technology areas, especially those of embedded processors, such as network processors and digital signal processors, and in GPUs
A core is a very small magnetic toroid, or doughnut. It can be magnetized in one direction or the other, so it represents one bit of memory. Core is also the term for the array of cores that make up main memory. Very few computers use core anymore, as it is old, slow technology. Some people still refer to core, however, when they mean main memory. One advantage of core was that it was non-volatile, retaining its state through a power off state, but moderm memory does that as well with batteries and various "save to disc" strategies.
dual core
Multiprocessing is accomplished when a processor contains moer than one ALU.
In computer processing, dual core processors are processors that feature two individual processing cores. 'Duo Core' is a brand of dual core processors associated with Intel Core 2 Duo processors. There is no difference, one is just a brand.
Four independent cores into a single package composed of a single IC. A dual-core processor contains two cores, and a quad-core processor contains four cores.
A hexa-core processor is a type of central processing unit (CPU) that contains six independent processing cores on a single integrated circuit (IC) chip. Each core is a fully functional processing unit capable of executing instructions and performing calculations independently of the other cores. Hexa-core processors are designed to handle multiple tasks simultaneously and provide increased processing power compared to dual-core or quad-core processors. The cores in a hexa-core processor can be identical in architecture or have different specifications, such as clock speed or cache size, depending on the specific design of the CPU. These cores work in parallel, dividing the workload among themselves, which allows for better multitasking performance and improved efficiency in handling complex tasks. Hexa-core processors are commonly used in modern computers, laptops, servers, and high-end mobile devices. They are especially beneficial for tasks that require significant computational power, such as gaming, video editing, 3D rendering, scientific simulations, and running multiple virtual machines.
http://gamerstech.weebly.com/installing-a-processorcpu.html
cpu
The 3DS contains an ARM11 MPCore dual-core processor, and also a single ARM9 processor for backwards compatability with the original DS games.