Tagged Questions

The microprocessor is an integrated circuit that elaborates information in the form of digital signals. Not to be confused with a microcontroller, which embeds many additional devices to control embedded systems.

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25 views

How to implement a pipelined integer divider

I need to implement a pipelined integer divider for my 64-bit microprocessor. I have tried reading up on this, but I am still confused. Any advice would be appreciated.
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1answer
30 views

How to set flags in microprocessor 8085 after IN instruction?

When microprocessor reads an input port, the instruction IN does not set any flag. If the input reading is zero, what logic instruction can be used to set the ZERO flag without affecting the contents ...
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1answer
47 views

Small system on a chip : Power consumption [on hold]

This question is lying somewhere between electrical engineering and computer science, however I felt that this forum suited my question the best. I post this question because I feel that this kind of ...
-1
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0answers
14 views

Processor benchmark comparison between intel i7 950 and i7-4770k [closed]

I plan to purchase a new computer (new processor -> "i7-4770k 4Ghz") only because I want more power regarding calculation. I have a java program that does a lot of calculation and I have an older ...
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0answers
53 views

Currency Converter [closed]

so I would like to ask you guys to help me creating a program of a Currency Converter using mcu 8051 ide software.. using c++ is easier but unfortunately, the task needed us to do it in 8051.. ...
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0answers
55 views

Example for currency converter program using mcu 8051 ide software [closed]

I want to ask if anyone have an idea on how to write a program for currency converter using mcu8051ide software. The program is for the connection between the keypad and the lcd of the circuit using ...
-2
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0answers
61 views

Currency converter program using mcu8051ide [closed]

i want to ask if anyone have an idea on how to write a program for currency converter using mcu8051ide software. Any country currency also dont mind because I just want to see the basic idea of ...
0
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6answers
149 views

how to know how many bits a microcontroller has?

How can I know what kind of architecture a microcontroller has? For example where can I read in the datasheet of the pic 16F873 how many bits architecture is? 8, 16, 32? Next question what does: What ...
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2answers
113 views

Rotating POV LED Cylinder Using Addressable RGB LED Strips

​My son and I are trying to build a somewhat large Rotating POV Cylinder (or Globe) making use of ready-made Addressable RGB LED strips (WS28011 or LPD8806?). After some browsing, we found that many ...
3
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3answers
618 views

memory segmentation in 8086

If the external memory (1 MB) in 8086 based system is segmented into code, data, stack and extra which are all 64 kB, what do we do with the rest of the memory? Does it go waste?
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1answer
59 views

Shortest time required UART- UART transfer of 32 Byte block

I need to transfer 32 Byte block UART to UART 8 clock cycles per bit 1 start bit Struct 8-E-2 8bits 1 UART char, Even Parity, 2 stop bits/ char 1 + 8 + Even parity + 2 stop bits = 11 efficiency = ...
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0answers
60 views

NXP LPC2138 does not start up. Electronic problem?

I have a problem with LPC board and I cant figure out what is wrong. It manifests like this: I can connect board via jtag and Keil sw recognise the processor. I can program it (at least I guess that ...
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1answer
73 views

24 volt on microprocessor input pin

I have got my hands on a Intel Edison system on chip. I would like to use it to detect non-zero voltage. For example I have a test point that could be either 0 volt or 24 volt and I want to detect ...
2
votes
1answer
111 views

Where to simulate and test Microprocessor designs? [closed]

I'm reading book on computer architecture by Patterson and Hennessy. Now I'm much interested in designing a real-time working microprocessor. But i didn't have any idea where to start from! I started ...
0
votes
1answer
48 views

Interfacing switches with microcontroller

Im trying to interface momentary push-button switches to my Stellaris EK-LM4F120XL. Im using a positive logic interface, to momentarily set pin as HIGH if the button is pressed. A 10K resistor is ...
2
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4answers
63 views

2-bit branch prediction accuracy

I am trying to solve this problem, the answer should be 15/20 = 75%. However, I am not sure how this was calculated and want to understand the underlying concept. A program core consists of five ...
0
votes
1answer
64 views

How to calculate cache size?

A cache with a line size of L 32-bit words, S number of sets, W ways, and addresses are made up of A bits. Assume that the cache is word addressed, i.e., the low two bits of the address are ...
0
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1answer
46 views

Direct cache vs. associative cache

Trying to solve this problem where direct cache would outperform associative: Propose you have a cache with a line size of L 32-bit words, S number of sets, W ways, and addresses are made up of A ...
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1answer
77 views

5-stage pipelined implementation (RISC) of a microprocessor

I'm trying to solve two questions about a RISC 5-staged pipeline that is not exactly like MIPS found here (everything is included in this post). Consider the non-pipelined implementation of a simple ...
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2answers
108 views

How does part of a microprocessor (Apple secure enclave) use a microkernel (L4)?

Please excuse my ignorance. I'm an 'old-fashioned' guy who thinks that there is just 'software' and 'hardware' - and these are two separate things. Along this line of thinking an OS is part of the ...
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1answer
84 views

Will ARM replace that older processor architecture? [closed]

I know that those processors with ARM architecture have their advantages, but will it replace those old kind of ones? Or they just will be dealing with different kinds of applications and continue to ...
1
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2answers
86 views

Role of the Memory Management Unit

I know that the first instruction stored in BIOS is "mapped" to memory address 0, and that a signal on the reset pin to the microprocessor causes this instruction to be fetched, beginning the POST and ...
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2answers
92 views

Is it possible to control many microcontrollers using a single microcontroller/microprocessor? [closed]

I am presently working on Home Automation Projects, having no of home appliances. I would like to know the ways that I can control many micro-controllers using a central ...
0
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1answer
105 views

ARM Cores Benchmark

I am taking some deep interest lately in the ARM architecture and there are many flavors of ARM out there....ARM7, ARM9, ARM11, ARM Cortex-A, ARM Cortex-M and etc. Are there any benchmarks of all the ...
0
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1answer
489 views

Memory-mapped I/O and Peripheral-mapped I/O in 8085 microprocessor

In the book it is given that: "to identify the I/O devices these devices can be interfaced using address from memory space: MEMORY-MAPPED I/O. Another option is to have a separate numbering ...
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1answer
132 views

Where/what functions as a clock on a (say intel i3-7) microprocessor?

In my Microcontrollers class today, our professor talked about how for the microcontrollers we use in lab, the clock is actually a "crystal" (either his command of English or of chemistry prevented ...
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1answer
111 views

What is the difference between Machine and Time Cycle in 8085 microprocessor?

I have search this topic but their I can not find any specific answer to this . So I need some specific answers .
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0answers
43 views

Microprocessor instructions per cycle clock [duplicate]

Could you please explain this issue: can a microprocessor perform on average more than one instruction per clock cycle?
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3answers
108 views

Connect USB to microprocessor lacking a output port?

Sorry I'm sure this is a very simple answer but I know very little about how it works beyond serial ports and USB adapters for interacting with PCB circuits. I've taken apart an old junk flip ...
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2answers
63 views

Processor Budgeting

How do I figure out if a microcontroller has enough processing speed to handle particularly "intensive" tasks? Specifically, I am a university student looking to design a robot that uses OpenCV and a ...
1
vote
1answer
85 views

Is Micro-processor completely Digital?

I read about different parts of micro-processor like ALU, registers etc. all different digital parts. Are there any analog parts inside the processor?
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1answer
115 views

ADC Reading is much lower than expected

I am using a EFM32GG990 microprocessor and I am trying to get it to read a voltage using it's on-board ADC. I have made a circuit that I wish it to measure, both the loaded and open circuit voltage ...
-1
votes
1answer
73 views

Android Hardware Development

I want to learn about Android hardware development (not accessories, but this system itself), although I can find some CPU vendors that make Android versions compatible with their CPU, I can't find ...
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4answers
3k views

How can a CPU deliver more than one instruction per cycle?

Wikipedia's Instructions per second page says that an i7 3630QM deliver ~110,000 MIPS at a frequency of 3.2 GHz; it would be (110/3.2 instructions) / 4 core = ~8.6 instructions per cycle per ...
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0answers
119 views

How ALU Perform decrement operation using LOGIC Zero

I google many ALU Block diagram for decrement operation.all same as shown below. This 1 bit alu perform 8 operation depending upon select line status Theoretically all operation seems works ...
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2answers
1k views

What are buffer and latches in microprocessor?

I would like a description that clarifies the concepts of what buffers and latches are and the difference between them. I'm asking for buffers and latches in respect to the 8086 microprocessor.
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votes
2answers
144 views

how to build a micro processor? [closed]

I have learnt about 8085 micro processor in my 4th sem of engineering. Now I want to make own 8085 micro processor . My question is how should I start ? What are the requirements and which are the ...
1
vote
1answer
75 views

MPU accessing busy memory

I didn't know whether to place this question here or on stackoverflow, but I finally decided to post it here. I want to build a simple system that would be able to work with basic peripherals (UART, ...
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1answer
272 views

Why does Intel produce core i3, core i5 and core i7 processors; but not core i2, core i4 or core i6 processors? [closed]

Why does Intel produce core i3, core i5 and core i7 processors; but not core i2, core i4 or core i6 processors? What is the reason behind this?
3
votes
2answers
181 views

Why does Intel looks so advanced compared to other foundries, engraving fineness-wise? [closed]

Latest chips from Intel were 22nm, and they are now targeting 14nm (coming in 2014 or 2015 it seems). On the other hand, Global Foundries or TSMC struggle since several years to go beyond the 28nm ...
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0answers
31 views

Measuring power consumption of cache memories?

Is there any practical method to only measure the power consumption of combined cache memory. I am intereted in measuring the power conumption overhead when replacing blocks, and or filling the cache ...
0
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0answers
91 views

Where to start building this wifi video streaming circuit?

I am working on my own quadcopter and I would like to stream video from it to my computer. I know how to do it using Raspberry Pi and wifi dongle hooked to its usb port, but I don't want that solution ...
0
votes
1answer
44 views

Mapping the hex address representation to a specified conductor of system bus

I interested in how does implement the mapping of hex address representation to the specified contact of system bus. For example: Let we have logical address ...
2
votes
1answer
161 views

MSP430 printf function executes too slow [closed]

I try to use Sky mote (MSP430 F1611 + CC2420) to read the data from I2C sensor with 100Hz sampling frequency and write the data to serial port (USB). I tried a couple of tests and realized that the ...
2
votes
3answers
129 views

Why data buses should support 1024 bits, when processor are working with 64bits?

If the processors are working with 64bits, then why do they need Bus protocols to be as high as 1024bits. Is it for re usability?
8
votes
2answers
449 views

CPUs for retro computer school project

I'm a student in an IT school and we are trying to think of a project we could use to show 1st year students how things work behind the stage and we eventually thought of making a retro computer. ...
1
vote
3answers
178 views

Where do you find out how to program a specific microprocessor?

I have experience with AVRs, by programming them through the SPI port, but right now I'm looking at a Holtek HT46R22 and I can't find anything about how to program this Microprocessor. My question is ...
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votes
1answer
65 views

Is it possible do download a programm FROM a microprocessor? [closed]

I really don't find anything on this topic. I'm not sure if JTAG may give such possibilities. [Edit]:I found out, that for example with AVR Processors it's possible, as long as the corresponding fuse ...
1
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1answer
270 views

Using interrupts to strobe an LED

Beginner here, just playing around with a devboard using a PIC micro. I am attempting to strobe an LED using an interrupt, I've created the function below within isr.c, INTOSC is running at 4MHz, TMR0 ...
0
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0answers
99 views

Application of intel 8253 timer

8253 timer works in 6 different modes namely interrupt on terminal count, hardware-retriggerable one shot, rate generator, square wave generator, software triggered strobe and hardware triggered ...