Abstract:The most used applications by the majority of user of computer are web browsers. Users performs their many activities such as, browsing on the internet, download files, use social media applications, accessing e-mail accounts via web browser. Many of the crimes committed on digital resources must be analyzed user activities by examining the records of web browsers. Especially regarding crimes involving entered the URL, access times, browser type, time, downloaded files, search words, such information must be included in the reports of the examiners will create one of the data obtained. Web browser stores user records in different ways. Also, according to user operating systems differ in the locations for storing data. In this study, it is shown that how it should be done the analysis of web browsers on the digital resources which are subject to criminal, the data of different browsers on different operating systems, storage types and data types that can be obtained. In addition, it is showed that, the tools and features used to examine the records in the web browser.
This paper presents the simulation results of binary digital modulation schemes. In this paper, for BASK and BPSK modulation techniques used FPGA algorithm, multiplier don't using. If multiplier block is used for multiplication bit stream with carrier signal, used time will rises. In addition using multiplier block obtained simulation results were analyzed and compared to other simulation results. Source consumptions of FPGA-based BASK modulation technique and BPSK modulation technique were compared. Also, for different modulation algorithm, source consumptions of BASK and BPSK modulation technique were analyzed using VHDL and Quartus 9.2 complier. Designed modulators using VHSIC (Very High Speed Integrated Circuit) Hardware Description Language (VHDL) was realized on high speed FPGA (Field Program Programmable Gate Array). Because for used modulation technique data rate transfer is fairly important in wireless communication systems. The highest speed data rate transfer can be realized using fiber optic cables. In addition, BER (Bit Error Rate) of BASK and BPSK modulator was compared using MATLAB simulation program. Binary data rate is same for BPSK and BASK. BPSK and BASK modulations were designed on FPGA using VHDL hardware description language.
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