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Anonymous users2024-02-07Register Transfer Language (RTL).
Arithmetic operations.
The basic arithmetic operations are addition, subtraction, negation, and shifting.
Table Arithmetic operations.
Symbolic Notation Description.
f a + b the sum of a and b is transmitted to f
f a-b The difference between a and b is transmitted to f
b b+1 finds the complement of the number of registers b.
b b is the inverse of the number of registers b.
f a+b+1 a plus b is transmitted to f
a a+1 plus 1
a a-1 minus 1
Logical operations. A logical operation is an operation between two registers, including and, or, and not, and in order to distinguish it from arithmetic operation symbols, the notation , or, and not are used for the notation , respectively
and a horizontal bar above the letter.
Shift operation. There are two types of shift operations: left shift and right shift.
1) Shift left operation statement: a shla, a[0] 0
2) Shift right operation statement: a shra, a[3] 0
3) Loop left operation statement: a shla, a[0] a[3].
4) Loop right operation statement: a shra, a[3] a[0].
Input and output operations.
The register transfer language can also describe system input and output operations, and is denoted as if data from the input line x is transferred to register a.
A X uses the symbol when it transmits the bits of register A to the output line"＝"Denote.
z=a: This statement means that the register input is directly connected to the output line z.
Unconditional Transfer and Conditional Transfer.
Unconditional transfer statements.
s) indicates that the next step is to continue with the statement numbered s.
Conditional transfer statement.
f1，f2，fn）/（s1,s2,sn）
where f is a function of a system variable, with a value of 0 or 1, when fi is 1, the statement with the si label is executed, and when all fi is 0, the statement is executed sequentially.
Null operation statement.
It means that no operation is performed, but it is used to get the delay time of a clock, and then the next statement is executed sequentially.
1.Right. 2.Right.
3.Wrong. 4.Wrong.
5.Wrong, wrong.
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Anonymous users2024-02-06A register can be understood as consisting of two triggers. This allows the state to be saved.
1.Right. 2.Right.
3.Wrong. 4.Wrong.
5.Wrong, wrong.
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Anonymous users2024-02-05Both latches and registers are circuits used in digital circuits to temporarily store binary signals, and a one-bit latch and a one-bit register can both store a one-bit binary number;
latchGenerally, it is generated in the description of the combined logic circuit, and its trigger condition is generally level triggering (both high level or low level triggering, generally put an enable signal at the input end of the latch, as the trigger condition of data latching) as shown in the figure below The left is the latch, EN is used as the enable signal terminal, as the switch of latching data, when EN is high, the data of D IN is stored in D Out, if the enable signal of EN is low, D out will remain in the original state!
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Anonymous users2024-02-04The basic elements of digital circuits are mainly various digital integrated circuits.
Such as: basic gate circuits such as and, or, not, and non of combinatorial logic; Triggers, counters, registers for timing logic.
encoders, decoders; Comparators for interface circuits.
analog-to-digital, digital-to-analog, voltage-frequency converters; Other complex, large-scale chips are integrated on the basis of these basic devices.
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Anonymous users2024-02-03A register can be understood as consisting of two triggers. This allows the state to be saved.
1.Right. 2.Right.
3.Wrong. 4.Wrong.
5.Wrong. Wrong.
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Anonymous users2024-02-02A shift register is a type of memory in which data can be moved from low to high or from high to low. For example, an 8-bit shift register, the data in which it is 11001010, if it is moved to the left (high bit) once, it becomes 1001010x, the original highest bit of 1 is moved out, and the lowest bit of x can be the newly moved data or 0 (different models of shift registers have different regulations for this).
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Anonymous users2024-02-01What kind of digital logic components are registers used to store temporarily?
BCD, ASCII, Gray, 、..
No matter what digital it is, it can be saved. What and what is it mainly made of?
It is composed of a transistor and a resistor.
Don't forget to adopt.
There are registers in the CPU, such as the accumulator in the ALU (Computing Unit). When the CPU operates on these registers, it also needs to have an address in order to distinguish between different registers. This address is the address code you are talking about.
latch. Difference from registers:
1.The registers are synchronous clock control, while the latches are potentiometric signal control. The latch is generally determined by level. >>>More
Is our country's education system a waste of money ?
Countries have their own environments and cultural traditions, and they cannot be generalized. The textbooks and courseware of the Massachusetts Institute of Technology in the United States are published on the Internet free of charge, and the Chinese around the world are also obliged to translate, anyone can go to learn, and there are more people who can pass the exam, how many countries can be like him? Academicians, postdoctoral fellows, and doctoral supervisors also come to class, which is known for their faintness. >>>More
The memory that the CPU can directly access is the internal memory. >>>More
Difference Between Latch and Register:
1.The registers are synchronous clock control, while the latches are potentiometric signal control. Latches are generally controlled by level signals and are level-sensitive. Registers are generally controlled by clock signals and are edge-sensitive. >>>More