Computer Fundamentals - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit III: Computer Fundamentals
In MIPS, the operands of arithmetic instructions are restricted; they must be from a limited number of special locations built directly in hardware called registers.
Computer Fundamentals - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit III: Computer Fundamentals
Each MIPS arithmetic instruction performs only one operation and must always have precisely three variables. For example : add a, b, c.
Computer Fundamentals - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit III: Computer Fundamentals
The input unit transmits data and instructions from the outside world to machine. It is operated by control unit. The memory unit stores both, data and instructions.
Computer Fundamentals - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit III: Computer Fundamentals
•The digital computer or simply computer in its simplest form is a fast electronic calculating machine that accepts digitized information from the user, processes it according to a sequence of instructions stored in the internal storage, and provides the processed information to the user.
Counters - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (d): Counters
A counter that divides an input frequency by a number which can be programmed, is called programmable counter.
Counters - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (d): Counters
Determine the number of flip-flops needed. If n represents number of flip-flops 2n≥ number of states in the counter. Choose the type of flip-flops to be used.
Counters - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (d): Counters
When counter is clocked such that each flip-flop in the counter is triggered at the same time, the counter is called as synchronous counter.
Counters - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (d): Counters
Choose the type of flip-flops to be used: T or JK. If T flip-flops are used connect T input of all flip-flops to logic 1. If JK flip-flops are used connect both J and K inputs of all flip flops to logic 1.
Counters - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (d): Counters
A binary ripple/asynchronous counter consists of a series connection of complementing flip-flops, with the output of each flip-flop connected to the clock input of the next higher-order flip-flop.
Counters - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (d): Counters
A counter is a register capable of counting the number of clock pulses arriving at its clock input. Count represents the number of clock pulses arrived.
Registers - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (c): Registers
A register is a group of flip-flops. So an n-bit register has a group of n flip-flops and is capable of storing any binary information/number containing n-bits.
Registers - Digital Principles and Computer Organization
Subject and UNIT: Digital Principles and Computer Organization: Unit II (c): Registers
In a Johnson counter, the Q output of each stage of flip-flop is connected to the D input of the next stage.