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06 handout 1

Eljin Aguilar Logic Circuits and Design hard English 47 cards

06 handout 1

Cards in this deck (47)

  1. 1is a circuit that has multiple inputs (sources) and a single output (destination).multiplexer / MUX
  2. 2multiplexer consists of the following:2n data inputs
    n selection inputs – this determines the input that should be connected to the output. Thus, also known as the data selector.
    A single output
  3. 3Applications of MultiplexerData routing
    Parallel-to-serial conversion
    Operation sequencing
    Logic function generation
  4. 4Multiplexer Types2-to-1 (1 select line) multiplexer
    4-to-1 (2 select lines) multiplexer
  5. 5consists of two inputs D0 and D1, one select input S and one output Y.2-to-1 (1 select line) multiplexer
  6. 6Depending on the select signal, the output of 2-to-1 is connected to either of the inputs as follows:If the select line is low, the output will be switched to D0 input (S = 0 selects input D0)
    If the select line is high, then the output will be switched to D1 input (S
    = 1 selects input D1)
  7. 7the Boolean expression 2-to-1the Boolean expression 2-to-1
  8. 8consists of four (4) data input lines as D0 to D3, two (2) select lines as S1 and S0, and a single output line Y. The logical level applied to select lines determines which AND gate is enabled so that its input data passes through the OR gate to the output.4-to-1 (2 select lines) multiplexer
  9. 9the Boolean expression 4-to-1 for the output is:the Boolean expression 4-to-1 for the output is:
  10. 10is the exact opposite of the multiplexer, for it is a digital switch with a single input (source) and multiple outputs (destinations).demultiplexer (DEMUX/distributor)
  11. 11The select lines determine which output the input of demultiplexer is connected to. It consists of the following:1 data input
    2n output
    n selection inputs – the value of this determines the output that is selected.
  12. 12these are demultiplexers that extensively used in microprocessor or computer control systems such as:Selecting different IO devices for data transfer
    Choosing different banks of memory
    Depends on the address, enabling different rows of memory chips
    Enabling different functional units.
  13. 13Applications of DemultiplexerSynchronous data transmission systems
    Boolean function implementation
    Data acquisition systems
    Combinational circuit design
    Automatic test equipment systems
    Security monitoring systems
  14. 14DEMUX Types1-to-2 (1 select line) demultiplexer
    1-to-4 (2 select lines) demultiplexer
  15. 15consists of one input line, two output lines, and one select line.1-to-2 (1 select line) demultiplexer
  16. 16The signal on the 1 select line helps to switch the input to one of the two outputs only when?When the select input is low, the input will be passed to Y0
    If the select input is high, the input will be passed to Y1.
  17. 17consists of one input (D), four outputs (Y0 to Y3), and two control lines (S1 and S0) to make selections. The input data goes to any one of the four outputs at a given time for a particular combination of select lines.1-to-4 (2 select lines) demultiplexer
  18. 18is a sequential logic circuit capable of storage and transfer of data. It is used in digital and computer circuits for multiplication, division, timing, and parallel-to-serial data conversion. It consists of a group of flip-flops connected in a chain so that one flip flop could transfer its bit of information to the next most significant flip-flops of the register when a clock occurs.shift register
  19. 19SerialSerial
  20. 20ParallelParallel
  21. 21Combination of serial and parallelCombination of serial and parallel
  22. 22Basic Types of Shift Registers:Serial In – Serial Out Shift Register (SISO)
    Serial In – Parallel out shift Register (SIPO)
    Parallel in – Parallel Out Shift Register (PIPO)
    Parallel In – Serial Out Shift Register (PISO)
    Bidirectional Shift Registers
    Counters (rotate shift registers)
  23. 23are shift registers that accept data serially (one bit per clock cycle) and produces the sorted information on its output also in a serial form. The shifting (movement) of the data flows from left to right in the register.Serial In – Serial Out Shift Register (SISO)
  24. 24are shift registers used to convert data from serial to parallel. In this type of shift register, data bits are entered serially one bit simultaneously and output in a parallel form. Each bit is shifted on its clock pulse.Serial In – Parallel out shift Register (SIPO)
  25. 25are shift registers used to store and shift a 4-bit word, with the write/shift (WS) control input controlling the mode of operation of the shift register. In this type of shift register, the data input is received in parallel batches on every clock pulse, and this data is shifted and output serially.Parallel in – Parallel Out Shift Register (PIPO)
  26. 26are shift registers in which the output data across the parallel outputs appear simultaneously as the input data is fed in.Parallel In – Serial Out Shift Register (PISO)
  27. 27are shift registers capable of shifting the data either left or right depending upon the signals present on appropriate control input lines.Bidirectional Shift Registers
  28. 28are shift registers with their outputs fed back into the device as to create a particular pattern.Counters (rotate shift registers)
  29. 29Common Types of CountersRing counter (re-circulating shift register)
    Johnson counter twisted-ring counter)
  30. 30takes the serial output of the last flip-flop of a shift register and provides it to the serial input of the first flip-flop.Ring counter (re-circulating shift register)
  31. 31is the same as the ring counter, except the inverted output of the last flip-flop is connected to the input of the first flip-flop.Johnson counter twisted-ring counter)
  32. 32is a collection of cells capable of storing a large quantity of binary information.memory unit
  33. 33Information from the input device is ___ in memory Information to the output device is ___ from memoryInformation from the input device is stored in memory
    Information to the output device is taken from memory
  34. 34Types of MemoriesRandom-access memory (RAM)
    Read-only memory (ROM)
    Hybrid memory
  35. 35Stores binary info for later use Write operation: Storing data into memory Read operation: Transferring data out of memoryRandom-access memory (RAM)
  36. 36is an integrated circuit programmed with specific data when it is manufactured. The chips are used not only in computers but in most other electronic items as well. Can perform only read operationRead-only memory (ROM/firmware)
  37. 37Types of RAMStatic RAM (SRAM)
    Dynamic RAM (DRAM)
  38. 38Consists of latches to store binary data Stored data is valid as long as power is applied Easier to use Shorter write and read cyclesStatic RAM (SRAM)
  39. 39Stores data in the form of electric charges on capacitors (MOS transistors) Must be refreshed periodically Has less power consumption Larger storage capacityDynamic RAM (DRAM)
  40. 40Types of ROMErasable Programmable Read-Only Memory (EPROM)
    Programmable Read-Only Memory (PROM).
  41. 41You can erase this chip by using an ultraviolet light source. After you completely erase the program chip, you can make changes to the program.Erasable Programmable Read-Only Memory (EPROM)
  42. 42The manufacturer generally programs PROM through the use of special programming equipment. Once programmed, you cannot erase it or alter it.Programmable Read-Only Memory (PROM).
  43. 43Types of Hybrid MemoryFlash memory
    Electrically Erasable Programmable Read-Only Memory (EEPROM).
  44. 44is a modern type of EEPROM invented in 1984. It can be erased and rewritten faster than ordinary EEPROM, and newer designs feature very high endurance (exceeding 1,000,000 cycles).Flash memory
  45. 45it makes efficient use of silicon chip area, resulting in individual ICs with a capacity as high as 16 GB. This feature, along with its endurance and physical durability, has allowed it to replace magnetic in some applications, such as USB flash drives.Modern NAND flash
  46. 46Flash memory is sometimes called ___ or ___ when used as a replacement for older ROM types, but not in applications that take advantage of its ability to be modified quickly and frequently.Flash ROM or Flash EEPROM
  47. 47is a nonvolatile memory that offers the same programming flexibility as RAM. The program can easily be changed with a manual programming unit.Electrically Erasable Programmable Read-Only Memory (EEPROM/ E-squared prom)

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hard Logic Circuits and Design Flashcards on 06 handout 1, created by Eljin Aguilar on 04/12/2024.
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Eljin Aguilar
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