1. jabar

    Thread Starter New Member

    Oct 13, 2009
    14
    0
    hi
    which one is easier?
    designing a calculator by FPGA or TTL IC's for an amutor student his knowlege about ttl is more than Fpga?
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    I'm not sure what FPGA is, TTL is pretty much obsolete, though it is what I learned in college. How about CMOS?
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    You should go with FPGA.
    TTL is still around, but as Bill Marsden suggested, it's basically obsolete technology, as well as 4000-series CMOS.

    You would need a very large pile of TTL IC's (many now unavailable) to accomplish what you could do in an FPGA.
     
  4. alitex

    Active Member

    Mar 5, 2007
    122
    0
    if u know about FPGA chip and VHDL programming sure FPGA is greater than ttl,that is what i think
     
  5. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    FPGA (Field Programmable Gate Array) would seem to be the better choice. Do you have access to the design development tools that you will need for your FPGA of choice?

    hgmjr
     
  6. jabar

    Thread Starter New Member

    Oct 13, 2009
    14
    0
    thanks for your quick answer but i have not any knowlege about fpga.
     
  7. Thav

    Member

    Oct 13, 2009
    82
    0
    CPLDs are less powerful, but cheaper, and you can still program them with VHDL or Verilog. Also, most CPLD or FPGA development tools (available free from Altera or Xilinx) have schematic entry methods of programming that could put your TTL knowledge to good use.

    These devices are unlike microprocessors in that you're really just routing connections inside the device to various logic gates to make youre circuit.
     
  8. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    TTL is rather old. ( Iused it 30 years ago). But here is a linlpage from the EDUCYPEDIA on TTL:
    http://www.educypedia.be/electronics/digitaltechnologyttl.htm

    Other digital logig pages can be found there too:

    Digital electronics:
    Arithmetic circuits D/A-A/D converters Number systems Codes and decoders Flip flops Technology Counters and registers General overview Technology-CMOS Digital logic Memories Technology-TTL Timers and oscillators

    They also have a page on VHDL:
    http://www.educypedia.be/electronics/VHDL.htm

    So take your pick.

    Greetings,
    Bertus
     
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