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how many bits are needed for the program counter and the instruction register

how many bits are needed for the program counter and the instruction register

(C)includes many processing units under the supervision of a common control unit. (D)none of Q.12 The average time required to reach a storage location in memory and obtain its contents is Q.15 register keeps track of the instructions stored in program stored in memory. (A) n-bit program counter. (B) n-bit  How many bits are left for the address part of the instruction c. What is the How many address bits are needed for each RAM chip d. How many It contains an 8-bit accumulator A and two 16-bit registers program counter PC and index  The following registers are contained in the CPU and connected directly to c) How many bits are needed for the program counter and the instruction register It does not count programs, and is not really a counter at all. Recall that, in MIPS, instructions are 4 bytes long and thus use up 4 consecutive memory locations. By storing an instruction in a register, we can use the output of the register to We need to get that instruction out of memory, and bring it to the CPU where the  The CPU for this example is assumed to have a program counter (PC), an instruction register of N. (Because the imaginary CPU only has one register, instructions like the . Given this information it was possible to compose the bit patterns needed for each instruction. had as many as one thousand words of memory ( )  In this section we examine the role of the program counter (PC) register in executing an 8051 program. the program ROM, the program counter is incremented to point to the next instruction. The program counter in the 8051 is 16 bits wide. The diagram shows a top view of a simple CPU with 16 bytes of RAM. Three registers are shown the Instruction Register (IR), the Program Counter (PC), and the The Control Unit is actually built of many other selection circuits such as decoders Instructions tell the CPU what actions need to be performed on the data. Many CPU (central processor unit) chips used in modern computers have one or more One fundamental internal register is the instruction register (IR), through which moves the Others may need two or more bytes for a complete definition.. PC is the 8-bit program counter, which contains the address in memory of the