wat is all this and how do they differ from each other

[cadence_85]

VHDL,VHSIC hardware descrition Language,ASIC Designing,Verilog,Oracle,Orcad,Pspice Pls pls expalin it will be reallya great favour

 

[aryajur]

VHDL is Very High Speed Integrated Circuit (VHSIC) Hardware Description Language. This is a language standardised by IEEE to describe Digital ICs circuits. This can be written like a computer language and then the described circuit can be simulated or fabricated.
ASIC (Application Specific Integrated Circuit) Designing is the design of a IC for a particular application, say for example a capacitive sensor or maybe a digital IC doing a particular task.
Verilog is another Hardware Description Language but with a different Syntax than VHDL ( more like C)
Oracle is a Database Management System.
Orcad is a software tool to do board level design. It also has PCB designing capabilities.
PSpice is the Spice version that comes with ORCAD to simulate circuits.